Table 4-1. Unit Troubleshooting Chart (cont).
BRAKE SYSTEM (cont).
2. BRAKES SLOW TO RELEASE/DO NOT RELEASE.
Tools and Test Equipment:
l Dolly set parked on level surface.
. General mechanics tool kit
. Dolly set coupled to towing vehicle with towing
l Common no. 1 shop set
vehicle parking brake applied (para 2-14).
Personnel Required: Two
This sequence of operations
will require one person in the
towing vehicle to apply and
release brakes as directed,
while the second person
observes brake action.
A. Check brake fluid levels in master cylinders on
front and rear dollies (para 3-2).
ARE FLUID LEVELS CORRECT?
Correct brake fluid levels according
to Lubrication Chart (para 3-2).
B. Chock towing vehicle securely. Make sure
service and emergency air hoses remain con-
nected. Apply and release towing vehicle
service brake several times. Place your hand
on dolly set brake backing plates. Feel for
DO BRAKES APPLY AND RETRACT PROPERLY?
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