Check oil level and for evidence of water in oil.
Rotate crankshaft by hand to feel for smooth bearing movement.
Examine crankshaft oil seal externally for drying, cracking or leaking.
Consult factory or your local distributor if crankcase service is evidenced.
Examine sleeves (29) for scoring or etching and replace. Immerse sleeves in oil and carefully twist and push
sleeve onto rod, (machined counter bore end first).
Next install seal retainers (31).
Place inlet manifold (15) on pair of clearance blocks with CRANKCASE SIDE DOWN and drive out old seals
Invert inlet manifold (15) with CRANKCASE SIDE UP and install new seals (28). Lubricate circumference of seal
and install seal with GARDER SPRING DOWN.
Slip lubricated seal inserters onto piston rod ends, position inlet manifold onto pump and remove seal inserters.
Install washers (27) and cylinder bolts (26). Torque to 217 in. lbs.
Assemble piston assemblies and discharge manifold as described in 4-8.1.1 and 4-8.1.2.
4-8.2 Foam Pulse Pump. (Figure 4-22A).
4-8.2.1 Replacing Diaphragm. The pulse pump does not need to be removed to replace the diaphragm.
Remove nuts (1), washers (2) and screws (3). Lift head (4), with hoses attached, from the pump.
Lift diaphragm assembly (5) from pump case (6).
The diaphragm assembly (5) may be replaced as an assembly, or the diaphragm (7) only may
be replaced. When replacing rubber diaphragm (7) only, perform step c.
Remove nut (8) and washer (9) and remove diaphragm (7) from stem. Install a new diaphragm (7) and install
washer (9) and nut (8).
Install diaphragm assembly (5) in pump case (6).
Place head (4) in position and install screws (3), washers (2) and nuts (1).