Hummer H1 (2002+). Manual - part 198

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 Electrical System  12-19

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05745159

BATTERY SPLASH SHIELD AND SEAL SERVICE

Splash Shield Removal

1.

Remove upper splash shield and seal (Figure 12-32).

2.

Remove retainer bolts, and remove seal from battery tray
and lower shield (Figure 12-33).

3.

Remove lower splash shield bolts and remove lower
splash shield.

Figure 12-32:   Upper Splash Shield Attachment

Figure 12-33:   Seal and Retainer Attachment 

UPPER

SPLASH SHIELD

RETAINER

RETAINER

SEAL

BATTERY TRAY

RETAINER

SEAL

BATTERY TRAY

LOWER

SPLASH SHIELD

SEAL

RETAINER

RETAINER

4-1-00

12-20

Electrical System

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Splash Shield Installation 

1.

Position lower shield on bracket and install fasteners  
(Figure 12-34).

2.

Install retainer on upper shield.

3.

Install upper shield on tray.

4.

Install seals and retainers (Figure 12-33).

Figure 12-34:   Lower Splash Shield Removal/Installation

LOWER 

SPLASH SHIELD

BRACKET

BATTERY TRAY

AIRLIFT BRACKET

FRAME

RAIL

4-1-00 

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 Electrical System  12-21

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05745159

MAJOR POWER DISTRIBUTION

The following charts and illustrations convey how power is
distributed from the vehicle batteries to the fuse/relay centers.

Power is supplied to the fuse boxes from the batteries through
fusible links. Each fuse box has internal power busses that di-
rect the power to the fuses. The busses are indicated on the fuse
charts as follows: I = Ignition,  B = Battery,  A = Accessory,  L
= Lamps.

The fuse charts contain a listing of the cavities in the fuse box,
the corresponding circuits, wire colors and gauges (ga.).

Power is supplied to an individual fuse by the buss indicated in
the left buss column. The circuit number (CKT No.) contains
two entries for a fuse: the power supply buss and the outgoing
circuit number. The numbers in the cavity column relate to
the cavities indicated on the fuse/relay cavity I.D. illustrations.

Using this information, you can determine which cavity of a
fuse is the power supply cavity and which other fuses are sup-
plied by the same buss.

Figure 12-35:   Major Power And Ground Schematic

M

9-S12-088

FUSIBLE
LINK

GLOWPLUG

CONTROLLER

EXTERIOR
FUSE BOX

FUSIBLE
LINKS

FUSIBLE

LINK

FUSIBLE

LINK

INTERIOR

FUSE BOX

ENGINE

G4

G3

INTERIOR
GROUND BUSS

EXTERIOR FUSE BOX
GROUND BUSS

ALTERNATOR

BATTERY

BATTERY

STARTER

G1

FUSIBLE

LINK

EXTERIOR
POWER
BUSS

4-1-00

12-22

Electrical System

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ALTERNATOR 

Removal 

1.

Disconnect battery negative cable.

2.

Remove serpentine drivebelt from alternator pulley.

3.

Loosen pivot bolt and remove front and rear alternator
bolts (Figure 12-36).

4.

Pull alternator away from engine. Remove nut and
lockwasher and disconnect battery wires from battery
alternator terminal (Figure 12-37).

5.

Unlock and disconnect field wire (Figure 12-37).

6.

Remove pivot bolt and alternator from engine.

Installation

1.

Position alternator in bracket and install pivot bolt finger 
tight.

2.

Connect battery wires to alternator. Secure with
lockwasher and nut. Tighten nut to 62-80 lb-in (7-9 N•m).

3.

Connect field wire to alternator. 

4.

Move alternator into alignment with lower bracket and
install front and rear mounting bolts. Tighten bolts 18 lb-ft
(25 N•m).

5.

Tighten pivot bolt to 37 lb-ft. (50 N•m).

6.

Install serpentine drivebelt on pulley and adjust belt.

7.

Connect battery negative cable.

Figure 12-36:   Alternator Mounting 

Figure 12-37:   Alternator Connections 

ALTERNATOR

PIVOT

BOLT

ENGINE

BATTERY

TERMINAL

FIELD WIRES

BATTERY

WIRES

4-1-00