Lull 944E-42 Service Manual - Manual (Page 754)

Electrical System
9.244 Model 644E-42/944E-42 Rev. 6/04
9.14.18 Hourmeter
The hourmeter (1) is a non-repairable instrument that
records hours of vehicle engine operation in tenths of an
hour increments and is located in the dash panel.
The hourmeter is an analog device, similar to an
odometer, and will display 99,999.9 hours before
resetting to zero.
If trouble is suspected, time the hourmeter for six minutes
to verify that a tenth of an hour has been recorded.
The hourmeter is built into the dash panel and cannot be
repaired. If the hourmeter is suspect, replace the dash
panel.
9.14.19 Stabilizer Brake Switch
The stabilizer brake switch works in conjunction with the
Stabil-TRAK™ system. With the boom above 40° and the
service brake depressed, the Stabil-TRAK™ system will
engage. There are other function combinations which will
engage the Stabil-TRAK™ system, for more information,
refer to Section 10, “Stabil-TRAK™ System.” If the
Stabilizer Brake Switch is suspect in the proper operation
of the Stabil-TRAK™ system, refer to Section 10,
“Stabil-TRAK™ System,” page 10.17 or page 10.26.
a. Stabilizer Brake Switch Removal
1. Unlock and open the engine cover (2).
2. If the vehicle has dual batteries, disconnect both
negative battery cables (3 and 4) from both
batteries.
To access the lower battery (5), loosen the knob (6)
far enough so that the lip (7) on the upper battery box
clears the knob. Lift up the upper battery box (8) and
swing it out, so that the box clears the hydraulic tank
support bracket, to gain access to the lower negative
battery cable (3). Disconnect the lower negative
battery cable.
3. Remove lower access panel (9).
4. Disconnect the cab harness electrical
connector (10 or 16) from the stabilizer brake
switch (11 or 18).
5. Remove switch from switch bracket.
When Service Brake Valve Mounting Plate Does Not
Have Threaded Mounting Hole.
Remove switch dust cover (12) and the bottom
locknut (13). Remove the stabilizer brake switch (11),
with the top locknut (14) still attached, from the
service brake valve mounting plate (15).
0000000
RPM X 100
5
10
15
30
20
25
F
1/2
E 104
176
80
248
120 °C
°F
D
r/min
MU0010
1
4110390
1.
2.
OU0780
2
MU0650
3
4
5
6
7
8