Group 31 Integral Charging System (General Service): Specifications

New and Used Drive Belt Tension Specifications

Belts have differing tension specifications depending on whether they are Newly Installed (1) or Used (more than ten minutes of engine operation). When belts are found to be below the allowable minimum, they must be "RESET" (adjusted). Specifications for these situations are shown below:

DRIVE BELT TENSION

Belt Initial Tension

Allowable
New Belt Used Belt Minimum
Belt Type Kg(Lbs) Kg(Lbs) Kg(Lbs)

1/4" - V 22.68-36.28 18.14-27.21 18.14
(50-80) (40-60) (40)

All Other - V 54.43-72.57 40.82-54.43 31.73
(Except Air Pump) (120-160) (90-120) (70)

All Other - V 40.82-58.96 40.82-54.43 27.21
(Air Pump Only) (90-130) (90-120) (60)

5K (Fixed) - Ribbed 58-97-77.11 54.43-68.04 36.28
(130-170) (120-150) (80)

6K (Fixed) - Ribbed 63.50-81.64 58.97-72.57 40.82
(140-180) (130-160) (90)

6K (With Tensioner) 38.56-63.50 36.29-63.50 36.29
V8 - Ribbed (85-140) (80-140) (80)

NOTE: "Fixed" refers to systems with manually adjusted centers which are bolted in place and considered fixed.

(1) - Newly Installed - Refers to the condition of the "NEW" drive belt before the engine has made no more than one rotation and before the belt has had a chance to stretch or seat into the pulley groove(s).

SPECIAL SERVICE TOOLS

Tool Number Description

T63L-8620-A or Belt Tension Gauge
021-00019

021-00028 Belt Tension Gauge - Offset