2-78. HIGH PRESSURE PUMP. This task covers:
Tools, see TM 10-4610-232-12, Appx B,
Sec Ill, Ref Code (No.)
Tool Kit, General Mechanics Automotive (1)
Valve Seat Puller (4)
Spanner Wrench (4)
Torque Wrench (4)
Glycerine (Appx B, Sec II, Item 16)
Solvent (Appx B, Sec II, Item 32)
Tape, Antiseize (Appx B, Sec II, Item 67)
Lockwashers (TM 10-4610-232-24P)
Washers (TM 10-4610-232-24P)
Gaskets (TM 10-4610-232-24P)
ROWPU shutdown. Generator secured. High
pressure piping, valves and hoses removed
(para. 2-75), belt guard removed (para. 2-73), and
high pressure pump sheave removed (para. 2-77).
Personnel Required: 2
General Safety Instructions:
Observe specific Warning and Cautions in the text
The cleaning solvent used to clean parts can be dangerous to personnel and property.
Wear rubber gloves when using cleaning solvent. Wash hands with soap and water
and use a lanolin-based skin cream to prevent skin drying. Do not use solvent near
open flames or other sources of heat. Do not work with solvent in a closed room. Be
sure work area is well ventilated.
a. Refer to Figure 2-88, sheet 1 and remove four nuts (1), Iockwashers (2), washers (3), washers (4) and capscrews
The drain valves and fittings on the fluid end housing are easily damaged. Either
remove drain valves or use extreme care to prevent damage during removal.
b. Obtain a forklift or suitable lifting device. If necessary, rig a suitable lifting sling and Iift the pump assembly out as a
a. Refer to Figure 2-88, sheet 1 and remove two nuts (6) and flat washers (7). Remove clamp (8), cover (9), and
preformed packing (10).
b. Remove capscrew (11), retainer (12), springs(13 and 14) and valve plate (15).
If seat does not come free by tightening nut on puller, install nut on top of the puller
(all threaded rod) and tap firmly with hammer to free valve seat.