Lubrication Cycle Timer Check; Filter Assembly; Lubrication Cycle Timer Adjustment; Timer (Top Cover Removed) - Komatsu 930E-2 Shop Manual

LUBRICATION CYCLE TIMER CHECK

To check the solid state timer operation without waiting
for the normal timer setting, proceed as follows:
1. Remove timer dust cover.
NOTE: The timer incorporates a liquid and dust
tight cover which must be in place and secured at
all times during truck operation.
2. Adjust timer selector (3, Figure 3-7) to 5 minute
interval setting.
3. The timer should cycle in five minutes if the truck
is operating.
NOTE: If the timer check is being made on a cold start,
the first cycle will be approximately double the nominal
setting. All subsequent cycles should be within the
selected time tolerance.
4. Voltage checks at the timer should be accom-
plished if the above checks do not identify the
problem.
a. Insure timer ground connection is clean and
tight.
b. Using a Volt-Ohm meter, read the voltage
between positive and negative posts on the
solid state timer with the truck keyswitch "ON".
Normal reading should be 18-26 VDC, depend-
ing upon whether or not the engine is running.
FIGURE 3-7. TIMER (TOP COVER REMOVED)
1. Timer Enclosure
2. Red LED (Light Emitting Diode)
3. Timer Selector
P03018 4/00

Lubrication Cycle Timer Adjustment

The timer is factory set for a nominal 2.5 minute (off
time) interval. Dwell time is approximately 1 minute, 15
seconds. A longer interval (off time) is obtained by
turning the Selector knob (3, Figure 3-7) to the desired
position .
NOTE: Set timer by turning the Selector knob (3) to the
2.5 minute setting point. Then, turn the Selector clock-
wise, one detent at a time, to the desired setting, or
until the maximum limit of eighty minutes is reached.
The timer is a sealed unit, do not attempt disas-
sembly.

FILTER ASSEMBLY

The filter assembly element (5, Figure 3-8) should be
replaced if the bypass indicator (2) shows excessive
element restriction.
1. Housing
2. Bypass Indicator
3. O-Ring
4. Backup Ring
5. Element
Automatic Lubrication System
FIGURE 3-8. FILTER ASSEMBLY
6. Spring
7. Bowl
8. O-Ring
9. Plug
P3- 9