Quantcast Assembly - TM-5-4210-220-34_79

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Inspection (1) Discard all O-rings, seals, and gaskets (cont)
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TM-5-4210-220-34 Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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Assembly (cont) - TM-5-4210-220-34_80
TM 5-4210-220-34 2-12. PUMP DRIVE AND PTO - Continued (5) Inspect clutch discs (39 and 40).  Discard any that show signs of overheating.  Using a vernier caliper, measure the thickness of each clutch disc.  Discard any that do not fall within specification listed below. # Item ThicknessTolerances 39 Opposing Clutch Disc .068 .070 in.  (1.73 1.78 mm) 40 Bronze Clutch Disc 0605 .063 In.  (1.54 1.6 mm) (6) Inspect bearings, shafts, and gears as detailed in para 2-7.  Make sure oil passage in drive shaft (30) is not clogged. (7) Inspect companion flange splines, seal area, and mounting flange. (8) Inspect bearing covers (18 and 29) for cracks, warping or any other damage that may cause oil leaks. c. Assembly NOTE Lubricate seals and bearings using petroleum jelly (item 21, Appendix B) prior to assembly. (1) Assemble  spider  gear  assembly  as  detailed in the following steps. (2) Lubricate  block  vee  rings  (33  and  34)  using petroleum  jelly  (item  21,   Appendix   B)   and install   onto   piston   (35).      Make   sure   the sealing lips of the block vee rings are facing away from the spring seat. (3) Install  piston  assembly  (35)  into  spider  gear assembly (24).  Use extreme care so as not to  damage  the  block  vee  rings  (33  and  34) during   installation.      Twist   piston   assembly into spider gear assembly to ensure piston is fully seated. (4) Install  spring  (36)  into  spring  seat  of  piston (35). (5) Install retainer (37) onto spring (36) and compress using hand pressure.  Lock into position using lock ring (38). (6) Install  one  opposing  clutch  disc  (39)  and  then  install  one  bronze  clutch  disc  (40).    Continue  to  install clutch discs in this staggered manner until all 14 clutch discs are installed.  Make sure a bronze clutch disc is installed last. (7) Install  clutch  stop  spacer  (47)  and  lock  into  position  using  lock  ring  (41).    Set  assembled  spider  gear assembly (24) aside. (8) Press bearing (22) onto drive shaft (30).  Make sure bearing is fully seated against mounting shoulder. Lock bearing into position by installing lock ring (23). 2-73

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