Chpter IV Mechanical System
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
179
Fig. 4-5-2 Removing the engine accessories
Fig. 4-5-3 Removing the timing system
Fig. 4-5-4 Removing the cylinder head
assembly
Disassembly
Disassembly precautions:
Such used parts as the piston connecting rod group,
main bearing cap and main shaft bearing shell are not
interchangeable. Thus, before removal, check if there is
cylinder sequence number or matching mark on the top
surface of piston, the side surfaces of connecting rod
and connecting rod cover, and the bottom surfaces of
main shaft bearing shell and lower cylinder body. If
there is no mark or the mark is not clear, mark up the
parts during removal to ensure the parts can be
reinstalled as the same as before.
Disassembling the engine accessories
①
(1) Remove the generator belt: turn the tension pulley
with tools until the belt is loose enough, and then
remove the generator belt. See Fig. 4-5-3.
(2) Remove the tension pulley.
(3) Remove the wedge idle wheel assembly
(4) Remove the refrigeration compressor assembly.
Disassembling the timing system
②
(1) Remove the timing hood component I and timing
hood. See Fig. 4-5-3.
(2) Remove the timing tension pulley assembly. See
Fig. 4-5-3.
(3) Remove the timing belt.
(4) Remove the camshaft timing pulley.
Disassembling the cylinder head assembly
③
(1) Remove the cylinder head cover component. See
Fig. 4-5-4.
(2) Remove the camshaft bearing cap.
(3) Remove the camshaft assembly.
(4) Remove the cylinder head assembly: loosen the 10
bolts (M11×1.5×162) fastening the cylinder head and
cylinder body in proper order, and remove the cylinder
head.
Caution:
If the cylinder head bolts are not orderly
unscrewed in separated times, the lower surface of the
cylinder head might be damaged.
