Hummer H1 (1992-1998). Manual - part 10

2-15. ENGINE DISASSEMBLY INTO SUBASSEMBLIES (Cont’d)

  t. Oil Filter, Adaptter, and Oil Pressure Sending Unit 

1.

2.
3.
4.

5.
6.
7.

NOTE

Have drainage container ready to catch oil.

Remove oil filter (19) from adapter (15). Discard oil filter (19).
Remove adapter bolt (17), gasket (16), and adapter (15) from cylinder block (21). Discard
Remove two O-rings (18) from adapter bolt (17). Discard o-rings (18).
Remove O-ring (14) from adapter (15). Discard O-ring (14).
Remove two oil cooler line fittings (20) from cylinder block (21).
Remove oil pressure sending unit (12) from fitting (13).
Remove fitting (13) from cylinder block (21).

gasket (16).

2-29

2-15. ENGINE DISASSEMBLY INTO SUBASSEMBLIES (Cont’d)

NOTE

Have drainage container ready to catch oil.

1. Remove oil drainplug (2) and gasket (3) from oil pan (5) and drain oil. Inspect gasket (3) and discard

if damaged.

2. Rotate cylinder block (7) 180°.
3. Remove eighteen capscrews (i) and two studs (4) from oil pan (5) and cylinder block (7).
4. Remove oil pan (5), gasket (8) (if installed), and oil pan rear seal (6) from cylinder block (7). Discard

gasket (8) and seal (6).

2-30

2-15. ENGINE DISASSEMBLY INTO SUBASSEMBLIES (Cont'd)

1. Remove nut (10) securing bracket (12) to stud (9).

2. Loossencapscrew (13) from bracket (12) and oil screen (11) and slide bracket (12) off stud (9).
3. Remove stud (9) from oil pump (8) and rear main bearing cap (14).
4. Remove oil pump (8) and shaft (15) from cylinder block (7).

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2-32

Change 1

2 - 1 5 . ENGINE DISASSEMBLY INTO SUBASSEMBLIES (Cont’d)

w. Fuel Pump

1.

Rotate cylinder block (7) 180°.

WARNING

.

Gaskets installed on some 6.2L engines assembled prior to 1991 may
contain asbestos.  Gaskets in steps 2 and 3 should be removed with a
scraper or putty knife and then be disposed of IAW current directives.
Inhalation of asbestos fibers can cause respiratory ailments.

2.

Remove two capscrews (1), fuel pump (2), and gasket (3) from cylinder block (7). Discard gasket (3).

3.

Remove two capscrews (8), adapter plate (4), gasket (5), and pushrod (6) from cylinder block (7).
Discard gasket (5).