radiator frequently in extremely dusty and dir ty
conditions .
Note: If engine shuts off due to o v erheating,
first c hec k the radiator and screen for ex cessi v e
buildup of debris .
Clean the radiator as follo ws:
1. R emo v e the screen.
2. W orking from the fan side of the radiator , blo w
with lo w pressure (25 psi) compressed air (do
not use w ater) . R e peat the ste p from the front
of the radiator and ag ain from the fan side .
3. After the radiator is thoroughly cleaned, clean
out debris that ma y ha v e collected in the
c hannel at the radiator base .
4. Clean and install the screen.
Brake Maintenance
Adjusting the Parking Brake
Interlock Switch
1. T ur n the engine off and remo v e the ignition
k ey . Do not eng ag e the parking brak e .
2. R emo v e the knob from parking brak e rod
and screws from the steering to w er co v er
( Figure 56 ).
Figure 56
1. Steering tower cover
3. Switch mounting screws
2. Parking brake knob/rod
4. Cover mounting screws
3. Slide the co v er up the steering shaft to expose
the parking brak e switc h ( Figure 57 ).
4. Loosen the screws and n uts securing the
parking brak e switc h to the left side of the
steering to w er ( Figure 56 ).
5. Align the parking brak e rod paddle with the
switc h plung er ( Figure 57 )
Figure 57
1. Parking brake interlock
switch
2. Parking brake rod paddle
6. Press do wn on the parking brak e rod and push
up on the switc h until the compressed length of
the switc h plung er is 0.030 inc hes ( Figure 57 ,
inset) . T his is the distance betw een the brak e
rod paddle and the switc h plung er housing .
7. Tighten the switc h mounting screws and n uts .
8. With the parking brak e diseng ag ed, the switc h
circuit should ha v e contin uity . If there is no
contin uity , mo v e the switc h do wn slightly until
there is contin uity .
9. Chec k the adjustment as follo ws:
A. Eng ag e the parking brak e .
B . Press the traction pedal while the engine is
r unning and the PTO lev er is diseng ag ed.
T he engine should stop within 2 seconds .
If engine stops , the switc h is operating
cor rectly; thus , contin ue operation. If
engine does not stop , there is a malfunction
in the interloc k system that m ust be
cor rected.
10. Install the steering to w er co v er and brak e rod
knob .
Adjusting the Service Brakes
Adjust the ser vice brak es when there is more than
one inc h (25 mm) of “free tra v el” of the brak e
pedals , or when the brak es do not w ork effecti v ely .
50
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