Caution – MacDon A40-D User Manual
Page 177

SECTION 7 MAINTENANCE AND SERVICING
169000 / 169040
175
Revision E
7.16 GAUGE ROLLERS
Gauge rollers can be removed for replacement 
or repair. Proceed as follows to remove gauge 
rollers: 
Removal: 
 
a. Raise header, and engage lift cylinder stops. 
CAUTION
Stop engine, and remove key from ignition 
before leaving Operator's seat for any 
reason. A child or even a pet could engage 
an idling machine. 
b. Remove bolts and clips (A) from forward edge of
gauge roller assembly.
NOTE
Use a socket and ratchet wrench to 
access the nuts. 
c. Remove hairpins on pins (B).
d. Support gauge roller, and remove pins (B).
e. Disengage tabs on mounting plate from slots in
cutterbar to remove roller assembly.
 
Installation: 
a. Position gauge roller assembly below cutterbar,
and insert tabs on roller assembly into slots (C) 
in frame. Secure with two pins (B) at lowest 
position. 
b. Attach clips (A) with bolts and nuts to secure
roller assembly to cutterbar.
NOTE
Use a socket and ratchet wrench to 
access the nuts. 
c. Tighten
nuts.
d. Remove pins (B), and adjust rollers to desired
height. Re-install the two pins (B).
e. Ensure that nut (D) on each pin registers in
adjacent hole in support bracket.
f.
Secure pins with hairpins (E).
7.17 ELECTRICAL
a. Use electrical tape and wire clips as required to
prevent wires from dragging or rubbing.
b. Keep lights clean, and replace defective bulbs.
c. To replace light bulbs:
1. Using a Phillips screwdriver, remove screws
from fixture, and remove plastic lens.
2. Replace bulb, and re-install plastic lens and
screws.
A
B
Bulb Part No. - Trade #1156
SP HAZARD LIGHT
PT TAIL LIGHT
C
E
D
B
