Lubricant Pump; Pump Housing Oil Level; Pump Pressure Control - Komatsu 930E-4SE Operation & Maintenance Manual

Automatic Lubrication System - Section 42
Page 42-6

LUBRICANT PUMP

Pump Housing Oil Level

The pump housing must be filled to the proper level
with SAE 10W-30 motor oil. Oil level should be
checked at 1,000 hour intervals. To add oil, remove
dipstick (4, Figure 42-5) on top of the pump housing
and fill the housing to the proper level marked on the
dipstick.
If the pump is not equipped with dipstick (4), remove
oil level plug (5) and fill the housing to the bottom of
the plug hole.

Pump Pressure Control

High pressure hydraulic fluid from the truck steering
system is reduced by the pressure reducing valve
located on the manifold on top of the pump motor.
This pressure can be read if pipe plug (3) is removed,
and a gauge is installed on the manifold.
FIGURE 42-5. PUMP CONTROLS
1. Pressure Control Valve
2. Override Switch
3. Pipe Plug
7/11 OM4213
4. Dipstick
5. Oil Level Plug
6. Flow Control Valve