JLG Skytrak 6036 Service Manual page 273

Trouble
Windshield Washer/Wiper for Enclosed Cab—GENERAL (cont'd)
Windshield wiper
has low speed
only and is
inoperative in high
speed.
Windshield wiper
has high speed
only and is
inoperative in low
speed.
Wiper has one
speed which is the
same in both low
and high.
Model 6036 S/N 9B0499 and Before
Probable Cause
1. Remove connector from
terminal H of wiper motor
and connect a 12 Vdc
source to this terminal.
2. If wiper runs in high, check
for open in red wire from
switch to motor.
3. If wiper is inoperative, look
for a hung or grounded
high speed brush in the
wiper motor.
1. Remove connector from
terminal L of wiper motor
and connect a 12 Vdc
source to this terminal.
2. If wiper runs in low, check
for open in black wire from
switch to motor.
3. If wiper is inoperative, look
for a hung or grounded low
speed brush in the wiper
motor.
1. Remove connectors from
terminals H and L of wiper
motor and connect a 12
Vdc source first to one
terminal and then the other
terminal.
2. If wiper runs in high and
low, check for an open in
wires from wiper terminals
H and L to the wiper
switch.
3. If wiper runs at one speed,
check for low and high
speed brush leads shorting
together internally.
Remedy
If the wiper runs in high,
proceed to step 2; if the wiper
is inoperative, proceed to
step 3.
Repair or replace as required;
if red wire provided continuity,
replace wiper switch.
Repair or replace as required.
If the wiper runs in low,
proceed to step 2. If the wiper
is inoperative, proceed to
step 3.
Repair or replace as required;
if black wire provided
continuity, replace wiper
switch.
Repair or replace as required.
Repair or replace as required.
If the wiper runs in high and
low proceed to step 2; if wiper
runs at one speed proceed to
step 3.
Repair or replace as required.
Section 10. Electrical System
Reference
See para. 10.10.3
See para. 10.10.1
See para. 10.10.3
See para. 10.10.3
See para. 10.10.1
See para. 10.10.3
See para. 10.10.3
See para. 10.10.3
See para. 10.10.3
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