84
Hydraulic System
3.
Lock out and tag out the vehicle (see
Locking Out and Tagging Out the Vehicle
Replacing the Hydraulic Pump
Occasionally, circumstances such as a broken pump drive shaft, a leaking or noisy pump or a lack of
hydraulic pressure or oil flow may necessitate the replacement of the pump.
Before proceeding with the replacement of the pump, determine the type of pump setup that is used
on your W
ITTKE
™ unit. There are 3 types of pump setups: front-mounted, PTO-driven mounted
(pump connected to PTO via a drive shaft) and direct mount PTO. Basically, each setup calls for the
same replacement method but with some differences due to the position of the pump.
A.
To replace a front-mounted hydraulic pump
, perform the following procedure:
1.
Disengage the pump and turn OFF the engine.
2.
Make sure the parking brake is applied and the vehicle is tagged out for maintenance purposes
(refer to “Locking Out and Tagging Out the Vehicle” on page 21).
3.
Close the shut-off valve (see Figure 7
14).
4.
Remove the pump guard.
Figure 7
-
4 Pump guard
5.
Disconnect the electric coil on the dump valve (if equipped).
Caution!
If the unit has to be driven away for repairs on the hydraulic system, remove the drive shaft
between the engine and the pump before restarting the engine.
Summary of Contents for FEATHERWEIGHT
Page 1: ...STARLIGHT SUPERDUTY MAINTENANCE MANUAL FEATHERWEIGHT ...
Page 2: ......
Page 3: ...STARLIGHT SUPERDUTY FEATHERWEIGHT MAINTENANCE MANUAL ...
Page 5: ......
Page 6: ......
Page 10: ...viii Table of Contents ...
Page 18: ...8 Introduction ...
Page 40: ...30 Safety ...
Page 46: ...36 Lubrication ...
Page 74: ...64 Electrical System ...
Page 90: ...80 Pneumatic System ...
Page 170: ...160 Multiplexing ...