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TM 5-4210-220-34
2-12.
PUMP DRIVE AND PTO - Continued
(9)
Lubricate two piston rings (32) using petroleum jelly (item 21, Appendix B) and install on drive shaft (30).
(10) Install spider gear assembly (24) into PTO housing (1) and aline the drive shaft hole with the housing.
Position housing on press bed so that it is resting on the oil supply end.
(11) Carefully slide drive shaft (30) into spider gear assembly (24).
(12) Lubricate bearing (22) outer race with petroleum jelly (item 21, Appendix B) and press bearing into
spider gear assembly (24). Lock into position using lock ring (21). Make sure drive shaft (30) has
enough clearance between press bed while bearing (22) Is pressed into position.
(13) With drive shaft (30) protruding through PTO housing oil supply end (1), install lock ring (42) and key
(31) onto drive shaft.
(14) Carefully install internal drive gear (43) into spider gear assembly (24). Make sure internal drive gear
meshes with the teeth of the bronze clutch discs (40). Lock in position using lock ring (44).
(15) Lubricate bearing (25) inner and outer races with petroleum jelly (item 21, Appendix B). Carefully press
bearing onto internal drive gear (43) until it contacts gear shoulder.
(16) Invert PTO housing (1) so that it is resting on the companion flanged end. Carefully press bearing (25)
outer race into PTO housing. Stop pressing once the snap ring on the outer race of the bearing
contacts the PTO housing.
(17) Install seal (28), back-up plate (27) and snap ring (26) into bearing cap (29).
(18) Aline gasket (19) with bearing cap (29) and attach to PTO housing (1) using four capscrews (17).
Evenly torque capscrews to 90 ft lb (122 Nm).
(19) Lubricate bearing (20) inner race using petroleum jelly (item 21, Appendix B) and install onto companion
flange end of the drive shaft (30). Use a soft drift and a hammer to install bearing.
(20) Lubricate seal (15) with petroleum jelly (item 21, Appendix B) and install into bearing cover (18).
(21) Aline gasket (19) with bearing cover (18) and attach to PTO housing using four capscrews (17). Evenly
torque capscrews to 90 ft lb (122 Nm).
(22) Install spacer (16) onto drive shaft (30). Install companion flange (14) and secure to drive shaft using
nut (13).
(23) Clamp companion flange (14) in a vise and torque nut (13) to 80 ft lb (108 Nm).
(24) Make sure drive shaft (30) rotates freely and that drive shaft end play does not exceed .006 in. (0.15
mm).
(25) Lubricate O-ring (45) with petroleum jelly (item 21, Appendix B) and install onto idler shaft (7).
2-75
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