Service Manual

46 PG / PE Series
Refer to Figure 11a and 11b.
Disassembly
1. Using a 10 mm wrench, loosen the end cap bolts
(4) evenly.
2. Keeping the end cap (2) held in place, remove
the four end cap bolts (4).
3. Slowly remove the end cap (2).
4. Remove the valve plate (31).
NOTE: Not applicable in PE-series pumps.
5. Remove housing alignment pins (3).
6. Remove housing gasket (5).
Inspection
1. Inspect the end cap body (2) for damage,
nicks or unusual wear patterns. Replace if
necessary.
2. Inspect the running surface (side that contacts
the cylinder block) of the valve plate (31). The
running surface may show evidence of minor
abrasive rings, this is normal.
NOTE: Grooving in the valve plate and or
end cap, made evident when the surface is
checked by dragging a ngernail across it,
would be cause for replacement of the valve
plate.
3. Inspect and replace alignment pins (3) if bent
or distorted.
4. Replace the housing gasket (5) with a new
gasket before reassembly.
Assembly
1. Install housing gasket (5) into housing gasket
seat of housing (1).
2. Install alignment pins (3) into housing (1).
3. Lubricate the valve plate prior to installation.
Install valve plate (31) so the stamped letters
“UP” on the valve plate are facing up toward
the end cap.
NOTE: Not applicable in PE-series pumps.
4. Lubricate the end cap (2) face prior to
installation in PE-series pumps.
5. Install end cap (2). Before installing the four
end cap bolts (4), push down on the end cap
(2) verifying alignment and insuring that the
cylinder block pistons spring back and forth.
Install end cap bolts (4). Tighten, reference
Table 2, page 38 torque values.
REMOVAL, INSPECTION AND
ASSEMBLY OF THE END CAP AND
VALVE PLATE
Figure 11a. PG Pump End Cap
4
2
5
31
3
1
3
1
5
4
2
PG Series Pumps (With Valve Plate) PE Series Pumps (No Valve Plate)
Figure 11b. PE Pump End Cap