Valve Repair 1900 SRM 964
3. Lubricate the valve cartridge threads and
O-rings with clean hydraulic oil.
4. Install the valve cartridge and torque to 28 to
38 N•m (20.7 to 28.0 lbf ft).
5. Slide the coil onto the valve cartridge with the
lettering out toward the coil retainer.
6. Install washer and capscrew and torque to
7N•m(62lbfin).
7. Connect the control wiring to the coil.
8. Remove blocks from wheels.
9. Connect battery and turn the key switch to the
ON position.
10. Operate the hydraulic functions several times to
purge air from the hydraulic circuit.
11. Test the lift truck by lifting and lowering a load
several times. Check for leaks.
12. Check hydraulic oil level in the reservoir and fill
to proper level. See Hydraulic Reservoir, Table 1.
13. Install the drive unit compartment covers. See
Drive Unit Compartment Covers.
RELIEF VALVE
B60Z, B60Z
AC
, C60Z, C60Z
AC
, and W60Z
Remove
1. Move lift truck to a safe and level area.
2. Lower the forks completely to relieve pressure
from the hydraulic system.
3. Turn the key switch to the OFF position and dis-
connect battery.
4. Block load wheels to prevent lift truck from mov-
ing. See the section Periodic Maintenance
8000 SRM 919, Periodic Maintenance 8000
SRM 1032, Periodic Maintenance 8000 SRM
1368, or Periodic Maintenance 8000 SRM
1298 - How to Put A Lift Truck on Blocks.
5. Remove the drive unit compartment covers. See
Drive Unit Compartment Covers.
6. Discharge the capacitor. See Special Precau-
tions.
7. Remove the hydraulic reservoir. See Lift Pump
and Motor, Remove Reservoir.
8. Slowly loosen and remove the relief valve.
Install
1. Verify that the O-rings on the valve cartridge are
not damaged. Replace as needed.
2. Verify that the valve cartridge and pump assem-
bly housing are clean and not damaged.
3. Lubricate the valve cartridge threads and
O-rings with clean hydraulic oil.
4. Installthevalvecartridgeandtorqueto32N•m
(24 lbf ft).
5. Install the hydraulic reservoir. See Lift Pump
and Motor, Install Reservoir to Pump.
6. Remove blocks from wheels.
7. Connect the battery and turn the key switch to
the ON position.
8. Operate the hydraulic functions several times to
purge air from the hydraulic circuit.
9. Verify that the relief valve settings are correct.
See Relief Valve Adjustment.
10. Test lift truck by lifting and lowering a load sev-
eral times. Check for leaks.
11. Check hydraulic oil level in reservoir and fill to
proper level. See Hydraulic Reservoir, Table 1.
12. Install drive unit compartment covers. See Drive
Unit Compartment Covers.
18
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