DISC-O-FLEX COUPLING

Transcription

1 RATHI TRANSPOWER PVT. LTD. PUNE - INDIA INSTALLATION INSTRUCTIONS DISC-O-FLEX COUPLING R-II-D-01/00-04/08 Page 1

2 INSTALLATION INSTRUCTIONS (A) BEFORE INSTALLATION 1. R e m o v e t h e c o u p l i n g f r o m p a c k i n g & t h o r o u g h l y i n s p e c t f o r s i g n s of damage. 2. R e m o v e r e d c o l o u r e d b o l t s & s l e e v e s w h i c h a r e p r o v i d e d f o r t h e p r o t e c t i o n o f b l a d e s f r o m b e n d i n g d u e t o s p a c e r w e i g h t & f r o m d a m a g e d u r i n g t r a n s p o r t a t i o n & h a n d l i n g. Remember: T h e s p a c e r s o f D B S E s l e s s t h a n t h e s p e c i f i e d m i n. S t d. D B S E s i n cata l o g u e m a y n o t b e a v a i l a b l e w i t h r e d c o l o u r e d b o l t s & s l e e v e s. 3. Remove protective coatings/lubricants from bores & keyways. 4. D i s a s s e m b l e t h e c o u p l i n g b y r e m o v i n g r e q d. b o l t s & n u t s. F i n d t h e c o u p l i n g s i n d i s a s s e m b l e d c o n d i t i o n s a s s h o w n i n m o u n t i n g p r o c e d u r e. 5. I f t h e c o u p l i n g i s s u p p l i e d i n p i l o t b o r e, t h e f i n i s h b o r e m u s t b e d o n e w. r. t. t o Outside Diameter, not w.r.t. Hub boss Diameter. Keyway is to be slotted between two adjacent holes of hub as shown in fig. It is recommended that the distance d s h o u l d b e h a l f o f t h e l e n g t h t h r o u g h b o r e L T B. ( R e f. F i g. 1 ) F i g. 1 (B)(a) MOUNTING PROCEDURE (For LM/LMC Couplings) 1. D i s a s s e m b l e t h e c o u p l i n g b y r e m o v i n g a l l n u t s & b o l t s. F i n d t h e c o u p l i n g s i n disassembled conditions as shown below: - F i g. 2 c o n t d R-II-D-01/00-04/08 Page 2

3 2. Mount the h u b s o n c o r r e s p o n d i n g s h a f t s w i t h t h e h e l p o f t h e k e y s & s e t s c r e w s. F o r h u b s type II min. b o l t c l e a r a n c e R i s r e q u i r e d f o r d i s e n g a g e m e n t o f the spacer assembly. So confirm the d i s t a n c e R b e f o r e m o u n t i n g t h e h u b s. V a l u e o f R i s g i v e n i n r e s p e c t i v e c a t a l o g u e. F I G. 3 W i t h o n e m a c h i n e f i r m l y b o l t e d d o w n, s e t t h e r e f e r e n c e l e n g t h A e q u a l t o t h e d i s t a n c e b e t w e e n s h a f t e n d s ( D B S E ) a s s h o w n i n f i g. N o. 3. D B S E o f c o u p l i n g i s measure d b e t w e e n i n s i d e f a c e s o f h u b a s s h o w n i n f i g. 3. D e v i a t i o n i n s t a n d a r d D B S E i s d e f i n e d a s a x i a l m i s a l i g n m e n t ( e n d f l o a t ). F o r n o r m a l a p p l i c a t i o n s t h e s h a f t e n d s h o u l d b e f l u s h e d w i t h i n n e r f a c e o f t h e h u b. I n s o m e s p e c i a l c a s e s t h e s h a f t e n d s m a y p r o t r u d e b e y o n d t h e i n n e r f a c e o f t h e h u b o r m a y r e m a i n i n s i d e, i f r e q u i r e d. T h e d i s t a n c e b e t w e e n t w o f a c e s o f h u b f l a n g e s i s t o b e m a i n t a i n e d a s s p e c i f i e d. T h e v a r i a t i o n i n t h i s d i s t a n c e s h o u l d n o t e x c e e d t h e p e r m i s s i b l e i n i t i a l a x i a l m i s a l i g n m e n t g i v e n i n t a b l e 1. F i g. 4 (B)(a) MOUNTING PROCEDURE (For EM/FLM/FM Couplings) 3. D i s a s s e m b l e t h e c o u p l i n g b y r e m o v i n g H U B S & b o l t s. F i n d t h e c o u p l i n g s i n d i s a s s e m b l e d c o n d i t i o n s a s s h o w n b e l o w : F i g M o u n t t h e H U B S o n c o r r e s p o n d i n g s h a fts with the help of the keys & set screws. F o r H U B S t y p e I I m i n. b o l t c l e a r a n c e R i s r e q u i r e d f o r d i s e n g a g e m e n t o f t h e spacer assembly. So confirm the distance R before mounting the HUBS as s h o w n i n f i g 6. V a l u e o f R i s g i v e n i n r e s p e c t i v e c a t a l o g u e. R-II-D-01/00-04/08 Page 3

4 5. F i g. 6 W i t h o n e m a c h i n e f i r m l y b o l t e d d o w n, s e t t h e r e f e r e n c e l e n g t h A e q u a l t o t h e d i s t a n c e b e t w e e n s h a f t e n d s ( D B S E ) a s s h o w n i n f i g. D B S E o f c o u p l i n g i s m e a s u r e d b e t w e e n i n s i d e f a c e s o f h u b s s t e p s a s s h o w n i n f i g. 3. D e v i a t i o n i n s t a n d a r d D B S E i s d e f i n e d a s a x i a l m i s a l i g n m e n t ( e n d f l o a t ). F o r n o r m a l a p p l i c a t i o n s t h e s h a f t e n d s h o u l d b e f l u s h e d w i t h i n n e r f a c e o f t h e a d p a t e r. I n s o m e s p e c i a l c a s e s t h e s h a f t e n d s m a y p r o t r u d e b e y o n d t h e i n n e r f a c e of the hub or may r e m a i n i n s i d e, i f r e q u i r e d ( R e f. F i g. 7 ). T h e d i s t a n c e b e t w e e n t w o f a c e s o f h u b f l a n g e s i s t o b e m a i n t a i n e d a s s p e c i f i e d. T h e v a r i a t i o n i n t h i s d i s t a n c e s h o u l d n o t e x c e e d t h e p e r m i s s i b l e i n i t i a l a x i a l m i s a l i g n m e n t g i v e n i n t a b l e 1. F i g. 5 ( C ) ALIGNMENT PROCEDURE A l i g n m e n t p r o c e d u r e i s g i v e n s e p a r a t e l y f o r e a c h t y p e o f a l i g n m e n t, f o r s i m p l i c i t y. However all 3 types of misalignments may be present at the same time. IMPORTANT : The misalignment capabilities shown in drawings or in product literature are for dynamic conditions and variations. For optimum service from the coupling the installation misalignment (Initial misalignment) should not be more than 25% of the maximum allowable misalignments limits. Allowance should be made for any anticipated movements which will occure during operation (e.g. Thermal movements). F o r P e r m i s s i b l e INITIAL m i s a l i g n m e n t s r e f e r t a b l e 1 F o r P e r m i s s i b l e MAXIMUM m i s a l i g n m e n t s r e f e r t a b l e 2 R-II-D-01/00-04/08 Page 4

5 (I) CHECKING PARALLEL / RADIAL ALIGNMENT ( a ) Using Dial Gauge : C l a m p t h e d i a l i n d i c a t o r a t o n e e n d a n d r e s t t h e p l u n g e r o n O. D. T a k e t h e r e a d i n g a t e a c h q u a r t e r r e v o l u t i o n o f h u b b y r o t a t i n g o n e e n d. T h e p a r a l l e l m i s a l i g n m e n t ( P ) i s h a l f t h e T o t a l I n d i c a t e d R e a d i ng ( T I R ) s h o w n o n d i a l g a u g e. ( R e f e r F i g. a ) ( b ) Using Straight Edge : I f t h e f i e l d c o n s t r a i n t s d o n o t p e r m i t t h e u s e o f d i a l i n d i c a t o r t h e n u s e s t r a i g h t e d g e. M e a s u r e g a p P b y u s i n g f i l l e r g a u g e ( R e f e r F i g. b ) Remember : T h e p a r a l l e l m i s a l i g n m e n t P s h o u l d n o t e x c e e d t h e p e r m i s s i b l e i n i t i a l p a r a l l e l m i s a l i g n m e n t m e n t i o n e d i n t a b l e 1. (II) CHECKING ANGULAR ALIGNMENT ( a ) Using Dial Gauge : C l a m p t h e d i a l i n d i c a t o r a t o n e e n d a n d r e s t t h e p l u n g e r o n f a c e o f t h e h u b. T a k e t h e r e a d i n g a t e a c h q u a r t e r r e v o l u t i o n o f h u b b y r o t a t i n g o n e e n d. T h e a n g u l a r m i s a l i g n m e n t ( X ) i s h a l f t h e T o t a l I n d i c a t e d R e a d i n g ( T I R ) s h o w n o n d i a l g a u g e. ( R e f e r F i g. a ) ( b ) Using Vernier Calliper : I f t h e f i e l d c o n s t r a i n t s d o n o t p e r m i t t h e u s e o f d i a l i n d i c a t o r t h e n us e v e r n i e r c a l l i p e r. M e a s u r e D B S E a t 4 p l a c e s 9 0 a p a r t. T h e a n g u l a r m i s a l i g n m e n t i s h a l f t h e T o t a l I n d i c a t e d R e a d i n g ( T I R ) s h o w n o n v e r n i e r s c a l e. ( R e f e r F i g. b ) Remember : T h e a n g u l a r m i s a l i g n m e n t s h o u l d n o t e x c e e d t h e p e r m i s s i b l e i n i t i a l a n g u l a r m i s a l i g n m e n t m e n t i o n e d i n t a b l e 1. R-II-D-01/00-04/08 Page 5

6 (D).a) ASSEMBLY PROCEDURE FOR LM TYPE COUPLING C l e a n a l l t h e p a r t s c a r e f u l l y. I M P O R T A N T : I f t h e c o u p l i n g i s d y n a m i c a l l y b a l a n c e d, e n s u r e t h a t t h e m a t c h m a r k s a r e i n s t r a i g h t l i n e & u n i d i r e c t i o n a l b e f o r e b o l t i n g t h e a s s e m b l y. 1 ) S u p p o r t t h e s p a c e r b e t w e e n t w o h u b s i n s u c h a w a y t h a t t h e c l e a r h o l e s o f s p a c e r f l a n g e w i l l b e i n l i n e w i t h t h e p r e s s f i t t e d b u s h e s i n t h e h u b. 2 ) H o l d t h e f l e x i b l e b l a d e b e t w e e n t h e H U B S & s p a c e r f l a n g e s. 3 ) I n s e r t s o c k e t h e a d c a p s c r e w s w i t h s l e e v e s f r o m h u b s i d e t h r o u g h t h e c l e a r h o l e s o f H U B S, b l a d e h o l e s & p r e s s f i t t e d b u s h e s o n s p a c e r a n d t i g h t e n t h e n y l o c k n u t. 4 ) T h e n i n s e r t t h e s o c k e t h e a d c a p s c r e w s f r o m h u b s i d e t h r o u g h t h e p r e s s f i t t e d b u s h e s i n t h e H U B S, b l a d e h o l e s a n d c l e a r h o l e o n s p a c e r f l a n g e. I n s e r t t h e s l e e v e f r o m s p a c e r s i d e & t i g h t e n t h e N y l o c k n u t. 5 ) F o l l o w t h e s a m e p r o c e d u r e f r o m o t h e r s i d e a l s o. T h e n t i g h t e n a l l t h e n y l o c k n u t s t o t h e r e q u i r e d t i g h t e n i n g t o r q u e s f o r b l a d e p a c k b o l t s g i v e n i n t a b l e 3. 6 ) Ensure t h e G a p G i s e q u a l a t b o t h s i d e s o f s p a c e r. V a l u e o f g a p G i s g i v e n i n t a b l e 1 & 2. T i g h t e n t h e f o u n d a t i o n b o l t s o f b o t h e q u i p m e n t s. I M P O R T A N T : T h e n e c e s s i t y f o r s h i e l d s & g u a r d s v a r i e s w i t h i n d i v i d u a l i n s t a l l a t i o n s. T h e o w n e r o r u s e r m u s t p r o v i d e t h e r e q u i r e d s a f e t y g u a r d s. W e d o n o t f u r n i s h s a f e t y g u a r d s o r s h i e l d s w i t h t h i s e q u i p m e n t. R-II-D-01/00-04/08 Page 6

7 (D).b) ASSEMBLY PROCEDURE FOR LMC TYPE COUPLING C l e a n a l l t h e p a r t s c a r e f u l l y. I M P O R T A N T : I f t h e c o u p l i n g i s d y n a m i c a l l y b a l a n c e d, e n s u r e t h a t t h e m a t c h m a r k s a r e i n s t r a i g h t l i n e & u n i d i r e c t i o n a l b e f o r e b o l t i n g t h e a s s e m b l y. 1 ) S u p p o r t t h e s p a c e r p l a t e b e t w e e n t w o h u b s i n s u c h a w a y t h a t t h e s l o t o f t h e s p a c e r p l a t e w i l l b e i n l i n e w i t h t h e p r e s s f i t t e d b u s h e s o f H U B S. 2 ) I n s e r t o n e f l e x i b l e b l a d e s e t b e t w e e n h u b & s p a c e r p l a t e. 3 ) F i r s t I n s e r t A l l e n h e a d b o l t s ( h a v i n g s m a l l l e n g t h ) f r o m h u b s i d e, t h r o u g h p r e s s f i t t e d b u s h e s o n h u b f l a n g e, b l a d e h o l e s a n d s l o t o f s p a c e r p l a t e a s s h o w n i n f i g. 1. T h e n i n s e r t p l a i n w a s h e r & N y l o c k n u t t h r o u g h s l o t o f s p a c e r. K e e p t h e a c r o s s f l a t o f n u t p a r a l l e l t o s l o t s i z e b y k e e p i n g 1. 5 m m T h k. s t r i p i n b e t w e e n n u t A / F a n d s l o t s i z e, t i g h t e n t h e a l l e n h e a d b o l t s b y a l l e n k e y. A f t e r t i g h t e n i n g r e m o v e t h e s t r i p f r o m s l o t. ( F o r t i g h t e n i n g t o r q u e r e f e r t a b l e n o. 3 ). 4 ) I n s e r t a n o t h e r b l a d e p a c k s e t o n o t h e r s i d e a n d t i g h t e n t h e b o l t s s a m e w a y a s mentioned above. 5 ) T h e n i n s e r t t h e r e m a i n i n g 3 l o n g a l l e n h e a d b o l t s w i t h p l a i n w a s h e r f r o m c l e a r h o l e s i d e o f h u b t h r o u g h b l a d e h o l e s, p r e s s f i t t e d b u s h e s o f s p a c e r p l a t e a n d s l o t o f h u b f l a n g e. I n s e r t p l a i n w a s h e r a n d n y l o c k n u t f r o m s l o t s i d e o f h u b f l a n g e. B y k e e p i n g 1. 5 m m T h k. s t r i p i n b e t w e e n n u t A / F a n d s l o t s i z e, t i g h t e n t h e a l l e n h e a d b o l t s b y a l l e n k e y. A f t e r t i g h t e n i n g r e m o v e t h e s t r i p f r o m s l o t. ( F o r t i g h t e n i n g t o r q u e r e f e r t a b l e 3 ). 6 ) T o a v o i d l o o s e n i n g o f n u t, a p p l y t h r e a d l o c k e r, l o c t i t e s o l u t i o n o n t h r e a d s b e f o r e t i g h t e n i n g t h e b o l t s. T i g h t e n a l l f o u n d a t i o n b o l t s. 7) E n s u r e t h a t G a p G i s m a i n t a i n e d e q u a l l y a t f o u r p l a c e s 9 0 a p a r t o n b o t h s i d e s w i t h o u t r o t a t i n g e i t h e r o f t h e s h a f t. F o r G a p G r e f e r t a b l e n o. 1 & 2. I f t h e g a p G i s n o t m a i n t a i n e d w i t h t h e h u b s f l u s h w i t h t h e s h a f t e n d s, a d j u s t t h e H U B S s u c h t h a t g a p G i s e q u a l o n b o t h s i d e o f s p a c e r. T h i s e n s u r e s t h a t t h e b l a d e s a r e n o t s u b j e c t e d t o i n i t i a l s t r e s s e s d ue to excessive misalignments. IMPORTANT: The necessity for shields & guards varies with individual installations. The owner or user must provide the required safety guards. We do not furnish safety guards or shields with this equipment. R-II-D-01/00-04/08 Page 7

8 (D).c) ASSEMBLY PROCEDURE FOR EM TYPE COUPLING C l e a n a l l t h e p a r t s c a r e f u l l y. I M P O R T A N T : I f t h e c o u p l i n g i s d y n a m i c a l l y b a l a n c e d, e n s u r e t h a t t h e m a t c h m a r k s a r e i n s t r a i g h t l i n e & u n i d i r e c t i o n a l b e f o r e b o l t i n g t h e a s s e m b l y. 1) First ensure tightening all the nuts & bolts for reqd. tightening torque for disc pack bolts of spacer assly. 2) Ensure that the blades in spacer assly. Are in straight position and total length of spacer assly which is equal to distance between hub faces. 3) C o m p r e s s l i g h t l y t he spacer assly and insert it in between hub s faces and ensure that it has rest evenly in steps provided in both hubs. 4) Bring the tapped hole of adaptor in line with clear holes of hub. Insert the hub bolts with spring washers & tighten to reqd. ti ghtening torque as given in t a b l e 3. 5) Ensure that gap G is equal all over on both side of spacer assly. (For gap G refer table no. 1 & 2) 6) Tighten all the foundation bolts of both equipments. 7) Use thread locker lockite 270 solution to prevents the loose ning of bolts, if require. IMPORTANT: The necessity for shields & guards varies with individual installations. The owner or user must provide the required safety guards. We do not furnish safety guards or shields with this equipment. R-II-D-01/00-04/08 Page 8

9 (D).d) ASSEMBLY PROCEDURE FOR FLM/FM TYPE COUPLING C l e a n a l l t h e p a r t s c a r e f u l l y. I M P O R T A N T : I f t h e c o u p l i n g i s d y n a m i c a l l y b a l a n c e d, e n s u r e t h a t t h e m a t c h m a r k s a r e i n s t r a i g h t l i n e & u n i d i r e c t i o n a l b e f o r e b o l t i n g t h e a s s e m b l y. Note : If t h e F L M c o u p l i n g i s w i t h o u t d i s t a n c e p i e c e, t h e n f o l l o w t h e s a m e a s s l y p r o c e d u r e o f L M c o u p l i n g t y p e. F o r F L M c o u p l i n g h a v i n g a d a p t o r b o t h s i d e a n d f o r F M c o u p l i n g, f o l l o w t h e a s s l y. P r o c e d u r e a s g i v e n b e l o w. 1) First ensure tightening all the nuts & bolts of spacer assly. to reqd. tightening torque as given in table no. 3. 2) Ensure that the shims in spacer assly. are in straight position and total length of spacer assly which is equal to distance between hub faces. 3) Insert the spacer assly. between two hub faces and ensure that it has rest evenly in the steps provided in both HUBS. 4) Bring the tapped hole of D. P. in line with clear holes of hub. Insert the hub bolts with spring washers & tighten to reqd. tightening torque as given in t a b l e 3. 5) Mount dial indicator on both side of assly. as shown in fig. And follow the same alignment procedure for checking angular & parallel alignment as given in page no. 31 & 32. 6) The deviation in readings is total Indicated Readings (TIR). The actual misalignments are half of the TIR. These values should not exceeds initial misalignment values given in table no. 1 7) Tighten all the foundation bolts of both equipment. IMPORTANT: The necessity for shields & guards varies with individual installations. The owner or user m u s t p r o v i d e t he required safety guards. We do not furnish safety guards or shields with this equipment R-II-D-01/00-04/08 Page 9

10 (D).e) ASSEMBLY PROCEDURE FOR INVERTED HUB TYPE LM/LMC TYPE COUPLING C l e a n a l l t h e p a r t s c a r e f u l l y. I M P O R T A N T : I f t h e c o u p l i n g i s d y n a m i c a l l y balanced, ensure that the matchmarks are in straight line & unidirectional before bolting the assembly. A f t e r m o u n t i n g H u b s o n r e s p e c t i v e s h a f t, I n s e r t o n e b l a d e p a c k & s p a c e r o n i n v e r t e d h u b a s s h o w n i n f i g. 1 ) For LM t y p e s p a c e r a s s y, b r i n g c l e a r h o l e o f s p a c e r i n l i n e w i t h b u s h o f h u b f l a n g e. For LMC t y p e s p a c e r, b r i n g t h e s p a c e r s l o t i n l i n e w i t h b u s h o f h u b f l a n g e. 2 ) I n s e r t t h e s o c k e t h e a d c a p s c r e w f r o m h u b s i d e t h r o u g h b u s h h o l e, b l a d e h o l e a n d c l e a r h o l e o f s p a c e r f l a n g e. T i g h t e n t h e s e b o l t b y u s i n g p l a i n w a s h e r / s l e e v e an d n y l o c k n u t f r o m s p a c e r s i d e t o r e q u i r e d t i g h t e n i n g t o r q u e g i v e n i n t a b l e n o. 3 T h e n i n s e r t s o c k e t h e a d c a p s c r e w w i t h s l e e v e f r o m s p a c e r t h r o u g h b l a d e h o l e h u b b u s h h o l e a n d t i g h t e n t h e m b y n y l o c k n u t. I n c a s e o f LMC t y p e s p a c e r h a v i n g s l o t, keep 1.5 mm thi ckn ess. s t r i p i n b e t w e e n n u t A / F a n d s l o t f a c e. T h e n t i g h t e n t h e a l l e n h e a d b o l t ( h a v i n g s m a l l l e n g t h ) b y a l l e n k e y t o r e q u i r e d t i g h t e n i n g t o r q u e. A f t e r t i g h t e n i n g, r e m o v e t h e s t r i p f r o m s p a c e r s l o t. 3 ) B r i n g a n o t h e r h u b a l o n g w i t h e q u i p m e n t c l o s e r t o s p a c e r m o u n t e d h u b a n d s e t t h e d i s t a n c e L a s s h o w n o n r e s p e c t i v e a s s y d r g. 4 ) C h e c k t h e a l i g n m e n t a s p e r t h e a l i g n m e n t p r o c e d u r e g i v e n o n p a g e N o. 3 1 & ) H o l d a n o t h e r s i d e d i s c p a c k i n b e t w e e n s p a c e r a n d h u b. I n s e r t s o c k e t h e a d c a p s c r e w a l o n g w i t h s l e e v e a n d f o l l o w t h e s a m e t h e s a m e p r o c e d u r e a s g i v e n i n S r. N o. 2. F o r t i g h t e n i n g o f a n o t h e r s i d e s o c k e t h e a d c a p s c r e w ( o f s m a l l e r l e n g t h ). T h e n i n s e r t l o n g e r s o c k e t h e a d c a p s c r e w a l o n g w i t h p l a i n washer/sleeve from c l e a r h o l e o f h u b f l a n g e. I t p a s s e s t h r o u g h b l a d e h o l e s, s p a c e r b u s h h o l e a n d t i g h t e n t h e m w i t h p l a i n w a s h e r & n y l o c k n u t i n t h e s l o t p r o v i d e d o n h u b f l a n g e a s p e r p r o c e d u r e g i v e n i n S r. N o ) E n s u r e t h a t g a p G i s e q u a l a l l o v e r o n b o t h s i d e o f s p a c e r a s s y. IMPORTANT: The necessity for shields & guards varies with individual installations. The owner or user must provide the required safety guards. We do not furnish safety guards or shields with this equipment. R-II-D-01/00-04/08 Page 10

11 (E) DISMENTALLING PROCEDURE F a i l u r e s a r e r a r e & c a n b e a t t r i b u t e d t o e x c e s s i v e m i s a l i g n m e n t, s e v e r e o v e r l o a d o r a c o m b i n a t i o n o f t h e b o t h. I n a l l c a s e s o f t h e c o u p l i n g f a i l u r e, i t i s a d v i s a b l e t h a t t h e c a u s e o f f a i l u r e i s f i r s t i d e n t i f i e d & t h e n c o r r e c t e d. F a i l u r e o f c o u p l i n g w i l l g e n e r a l l y b e a f a i l u r e o f b l a d e a s s e m b l y. T h e s e a s s e m b l i e s s h o u l d b e r e p l a c e d i n p a i r s. F a i l u r e o f o n e w i l l u s u a l l y r e s u l t i n d a m a g e t o t h e o t h e r. S u p p o r t t h e s p a c e r s u c h t h a t t h e b l a d e s s h o u l d n o t b e u n d e r s t r e s s e s d u e t o e x t e r n a l l o a d s, s u c h a s s p a c e r w e i g h t. Remove t h e r e q d. b o l t s, n u t s s u c h t h a t s p a c e r / s p a c e r a s s l y. w i l l g e t f r e e f r o m complete assly. I f t h e s p a c e r a s s l y. i s l o c a t e d i n h u b s s t e p t h e n c o m p r e s s t h e s p a c e r a s s l y. a n d d i s e n g a g e i t f r o m h u b s l o c a t i n g s t e p. Remember: It is recommended that the entire b l a d e p a c k s h o u l d b e r e p l a c e d w i t h t h e new factory assembled bladepack. R-II-D-01/00-04/08 Page 11

12 TABLE 1 PERMISSIBLE INITIAL MISALIGNMENTS FOR DISC-O-FLEX COUPLING COUPLING S I Z E LM EM PERMISSIBLE INITIAL MISALIGNMENTS Angular Degree per disc pack D i f f. i n g a p ( m m ) * GAP G (Std) m m A x i al Parallel ( m m / m m LM EM ( ± m m ) SPAN) # ± ± ± * G a p G i n a b o v e t a b l e i s g i v e n w h e n a n g u l a r a n d a x i a l m i s a l i g n m e n t s a r e z e r o. # S P A N = D B S E - G R-II-D-01/00-04/08 Page 12

13 TABLE 2 PERMISSIBLE MAXIMUM MISALIGNMENTS FOR DISC-O-FLEX COUPLING COUPLING S I Z E LM EM PERMISSIBLE MAXIMUM MISALIGNMENTS Angular * GAP G (Std) m m A x i a l Parallel ( m m / m m LM EM Degree per disc pack D i f f. i n g a p ( m m ) ( ± m m ) SPAN) # ± ± ± * G a p G i n a b o v e t a b l e i s g i v e n w h e n a n g u l a r a n d a x i a l m i s a l i g n m e n t s a r e z e r o. # S P A N = D B S E - G R-II-D-01/00-04/08 Page 13

14 TABLE 3 TIGHTENING TORQUES COUPLING SIZE F o r B l a d e p a c k B o l t s F o r H u b B o l t s L M E M B o l t S i z e Nm B o l t S i z e Nm 5 4 M M M M M M M M M M M M M M M M M M M M M M M M N o t e : A l l t h e a b o v e v a l u e s a r e f o r s o c k e t h e a d c a p s c r e w s h i g h T e n s i l e G r a d e a s p e r DIN R-II-D-01/00-04/08 Page 14