60-23
®
SERVICE- SERIES 90 HYD PUMP
(continued...)
NOTICE
K10
1/2 in
K90
Lock nut
Lock nut torque
K
K50
K70
K80
d
h
h
t
3.4 Charge Pressure Relief Valve (see Fig-5)
The charge pressure relief valve is shim adjustable (early models) or screw adjustable (late models).
Screw adjustable charge relief valve is shown.
3.4.1 Removal
1.
Remove the shim adjustable charge relief valve plug with a 1” hex wrench.
Before removing the screw adjustable relief valve plug, mark the plug
(K90), lock nut (K10), and housing to approximately maintain the original
adjustment when assembling.
Unscrew the plug using a large screwdriver or 1/2 inch hex wrench. Remove and discard the O-ring
(K50).
Remove the screw adjustable charge relief valve plug by loosening the lock nut.
3.
2.
3.4.2 Inspection
Inspect the poppet (K80) and mating seat in the endcap for damage or foreign material. When
inspecting shim adjustable valves, do not alter the shims or interchange parts.
3.4.1 Reassembly
Check the charge pressure and adjust, if necessary. Refer to pressure adjustments in Chapter 20 of
this manual.
Install the poppet (K80) and spring (K70). For shim adjustable valves, install the shims and plug,
torque to 68 N•m [50 lbf•ft]. For screw adjustable valves, install the plug with its lock nut, aligning
the marks made at disassembly, and torque the lock nut to 52 N•m [38 lbf•ft].
1.
2.
Fig-5
06/05/2019
Updated
SERVICE
Summary of Contents for 830B
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