Vortech Engineering GM 7.4 Instruction Manual download pdf (Page 20)

P/N: 4GC020-010

15SEP01 V1.1

(88-95 GM Lt Trk(4GC))

ALT

TENSIONER

SUPERCHARGER

POWER

STEERING

WATER

PUMP

CRANKSHAFT

IDLER

A/C

TENSIONER

ALTERNATOR

3/8-16x1-1/4"

3/8-16x1"

SUPERCHARGER

MOUNTING BOLTS

MOUNTING PLATE

A. Using the stock accessory drive belt, install as

originally installed.

B. Loosely attach the tensioner bracket to the

supercharger with the fasteners provided. (See

Figs. 9-a, 9-b

.) Make sure to use the washers on

all locations.

C. Adjust belt tension by rotating the adjuster plate

with a 1/2" drive socket and extension and

secure.

MOUNT TENSIONER

WITH SUPPLIED FASTENERS

YOU MUST USE THE WASHERS

MOUNT TENSIONER WITH

SUPPLIED FASTENERS.

NOTE: WASHERS MUST

BE USED ON ALL LOCA-

TIONS.

NOTE: It will be necessary to reset the

belt tension after approximately

250 miles.

FOR 1988-1993 MODELS ONLY

8. SUPERCHARGER MOUNTING

A. Attach the supercharger drain hose to the fitting

on the bottom of the supercharger and secure

with the clamp provided. Make sure to rotate the

clamp so it does not interfere with the mounting

plate.

B. Mount the supercharger to the mounting plate

with the four 3/8 16 x 1" bolts and washers and

one 3/8-16 x 1-1/4" bolt and washer for the plate

stiffener (See

Fig. 8-a

.) (For 1994-95 models,

the supercharger is mounted with five 3/8-16 x

1" bolts and washers only. The stiffener is not

used.)

C. Attach the oil feed line and secure.

WARNING: The oil system contains a small

orifice that is easily plugged.

DO NOT use any type sealant

on any of the threads. Instead,

use clean engine oil. Disas-

semble and blow out entire line

if you have any doubts.

Fig. 8-a

9. FACTORY ACCESSORY DRIVE BELT AND SUPERCHARGER DRIVE BELT

Fig. 9-a

Fig. 9-b

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