Brake Pedal Assembly; Checking Pedal Travel; Brake Pedal Replacement - GMC G Service Manual

5A-14 HYDRAULIC BRAKES

CHECKING PEDAL TRAVEL

Tool Required:
J 28662 Brake Pedal Effort Gauge
At frequent intervals the brake pedal should be checked
for travel. Travel is the distance the pedal moves toward the
floor from a fully released position. This check should be
made with the brakes cold and about 400 N (90 lbs.) of
force on the pedal; J 28662 may be used to measure the
force applied to the pedal. On vehicles with power brakes
the pedal must be pumped at least three times with the
engine off before making the check. To check the travel,
use a yardstick to measure the distance from the pedal to
the edge of the steering wheel with the pedal in the
fully released position ('A'; figure 14). With J 28662 in place
on the pedal, push the pedal with a force of 400 N (90 lbs.)
and measure the distance from the pedal to the steering
wheel again ('B'; figure 14). Subtract measurement A from
B to obtain the pedal travel measurement. See the list
below for the correct travel specification.
R-V-G Manual................................115mm (4.5-inches)
R-V-G Power....................................90mm (3.5-inches)
P (Except JF9).... ............................ 90mm (3.5-inches)
P (With JF9)...................................150mm (6.0-inches)
BRAKE PEDAL ASSEM BLY
A. Fully Released Position
B. Applied Position; 400N (90 Lbs.) Force
B-A = Brake Pedal Travel
: :______________ /
Figure 14 — Checking Brake Pedal Travel

BRAKE PEDAL REPLACEMENT

R/V AND P30 MOTORHOME MODELS
M Remove or Disconnect (Figures 15 and 16)
1. Retainer (6).
2. Washer (7).
3. Pin (10) and washer (9).
4. Pushrod (8).
5. Return spring (5).
6. Nut (2) and bolt (1).
7. Brake pedal (12).
8. Clutch pedal (11) (if equipped).
9. Bushings (3).
10. Spacer (4).
H Install or Connect (Figures 15 and 16)
1. Spacer (4).
2. Bushings (3).
3. Brake pedal (12).
4. Clutch pedal (11) (if equipped).
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