Crankcase, Crankshaft, Camshaft and Oil Pickup Line

CRANKCASE, CRANKSHAFT, CAMSHAFT AND OIL PICKUP LINE

Fig. 1 Camshaft Runout, Checking:

wear limit 0.04 mm (0.0015 in.)

Fig. 2 Camshaft End Play, Checking:

wear limit 0.16 mm (0.006 in.)
it out of specification, replace camshaft bearings

Fig. 3 Camshaft, Installing:

- mark on camshaft gear tooth must be between marks on crankshaft gear teeth (arrow)

- check backlash of timing gears
0.0-0.05 mm (0-0.002 in.)
backlash must be hardly noticeable

- turn crankshaft backward
camshaft must not lift out of bearings
if camshaft lifts out of bearings, install camshaft with smaller timing gear

NOTE: To obtain specified backlash, camshafts with various size timing gears are available. Markings are on inner face of timing gear.

Example: "- 0.1", "+ 0.1", "+ 0.2", indicates in 1/100 mm how much pitch radius differs from standard pitch radius "0"

CAUTION: Mark 0 on outer face of camshaft timing gear is timing mark and must not be confused with markings on inner face. Crankshaft timing gear is available in one size only

Fig. 4 Oil Pickup Line With Filter Screen, Cleaning:

- clean oil channels by blowing through with compressed air (arrow)

Fig. 5 Oil Suction Line With Filter Screen, Replacing:

Fig. 6 Thrust Washer And Main Bearing 1 Installing:

- Arrow 1: projection on thrust washer points toward main bearing and separating line of crankcase.

- Arrow 2: projection on main bearing fit into notches in crankcase. Oil holes are in left halt of crankcase housing.