Chery A11. Manual — part 11

Usage, repair and maintenance specification of CAC gasoline engine

4. The removal and installation of oil pump with oil seal

assembly

Fig. 82

Fig. 81

Fig. 80

Fig. 79

removal：
——Loosen six M6×30 hexagonal flange surface bolts.

Remove the bolts (as the figure indicates )
——Remove oil pump with oil seal assembly

— — Pry out the front oil seal of crankshaft by

screwdriver or chisel. Note: Don’t damage the front oil

seal bore.

——Remove seven M6 countersunk head screws (as the

arrow in figure indicates )
——Remove oil pump cover

——Take out the inner and outer rotor

45

Usage, repair and maintenance specification of CAC gasoline engine

——Check the clearance between outer rotor of oil pump

and case bore of oil pump.

Fig. 86

Fig. 85

Fig. 84

Fig. 83

The clearance between outer rotor of oil pump and

case bore of oil pump should be 0.06—0.19mm.

——Check the radial clearance between inner rotor and

outer rotor of oil pump.

The radial clearance between inner rotor and outer

rotor of oil pump should be 0.05—0.18mm.

——Check the end play of rotor

The end play of rotor should be 0.014—0.100mm.

——Remove horizontal hexagonal socket head plug (small

one)
——Take out the spring of relief valve and plunger of relief

valve.
——Check the spring load and free length

spring free length is 46mm。

spring load is 32.8N±2N when the length is 29mm.

installation length of relief valve spring is 38.5mm.

46

CAC Gasoline Engine Maintenance And Servicing Manual

3

ANHUI CHERY AUTOMOBILE CO., LTD

CAC478/480 GASOLINE ENGINE

Instruction Book on Using and Maintenance

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CAC Gasoline Engine Maintenance And Servicing Manual

3

Catalogue

Int ro duct io n. . . . . … . . . . . . … . . . 1
Engine configuration view and sectional view. . . . . . . . …3
Main engine technical indexes and operation parameters. . . . . . 11
Engine structural features. . . . . . . . . . . . 13
Engine service. . . . . . . . . . . . . . …15
Engine removal and assembly procedure. . . . . . . . . 17
[1]、Positioning no.1 cylinder top dead center (compression) . . . . . 17
[2]、Upper and lower timing gear cover assemblies removal and installation. …18
[3]、Crankshaft pulley removal and installation. . . . . . . …18
[4]、Valve cover and seal gasket removal and installation. . . . . …19
[5]、Timing belt removal, installation and adjustment. . . . . . …20
[6]、Tension pulley, crankshaft gear and camshaft gear removal, check and installation22
[7]、Camshaft oil seal removal and installation. . . . . . . . 23
[8]、Valve mechanism and cylinder head removal, check and installation. . …24
[9]、Piston and connecting rod assembly removal and installation. . . . 33
[10]、Flywheel assembly and rear oil seal bracket assembly removal and installation…36
[11]、Crankshaft, crankshaft thrust washer, bearing bushing and main bearing capremoval and

i n s t a l l a t i o n … … … … … … … … … … … … … … … … … … … … … … … … … … 3 8

[12]、Oil baffle assembly removal and installation. . . . . . . 41
[13]、Engine oiling system. . . . . . . . . . . . 42
[14]、Engine cooling system. . . . . . . . . . . …49
[15]、Engine air intake and exhaust system. . . . . . . . …53
[16]、Engine crankcase ventilation system. . . . . . . . …58
[17]、Engine fuel supply system. . . . . . . . . . …62
Carburetor engine malfunction , cause and correction. . . . . . …67
CAC480MEngine single-point electric control injection system. . . . …74
[1]、 Ge ne ra l… . . . … . . . … . . . . . . . 7 4
[2]、Operation theory … … … … … … … … … … … … … … … … … … … … … … … … … 7 5
[3]、Wir ing diagram. . . . . . . . . . . . . 95
[4]、Syst e m s ervice. . . . … . . . . . . . . …97
[5]、Malfunction, cause and correction. . . . . . . . . 102

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