Pickup 2WD L4-2.0L SOHC (1983)
Brake Proportioning/Combination Valve: Technical Service Bulletins
Blend Proportioning Valve - Specification Change
SUBJECT:
BLEND PROPORTIONING VALVE
NO.
STB-83-05-001
DATE
May 1983
MODEL
Truck 2WD 1983
The 1983 Mitsubishi Truck Service Manual has been updated:
GROUP 5 PAGE 5-19 BRAKES
The specifications for the split point and reducing ratio for REAR WHEEL DRIVE truck models has been changed:
FROM
TO
Rear-wheel drive models
P1
P2
P1
P2
Split point (at master
2.65 Mpa
5.55 Mpa
2.65 Mpa
6.77 Mpa
cylinder pressure)
(384 psi)
(810 psi)
(384 psi)
(981 psi)
Reducing ratio (P1 - P2)
0.25
1.0
0.10 to 1.0
GROUP 5 PAGE 5-20 BRAKES
The illustration (Fig. 16 Pressure Control of rear wheel cylinder) has been changed:
GROUPS PAGE 5-20 BRAKES (removal and inspection)
The test specifications have been changed:
EFFECTIVE DATE: Beginning with October 1, 1982 production
To refer to this bulletin apply this label to the top of page 5-19 of your 1983 Mitsubishi Truck Service Manual.
