Timing Gear; Timing Gear Setting; Timing Gear Backlash - Ezgo 1600xd Repair Manual

5.12 TIMING GEAR

5.12.1 TIMING GEAR SETTING

• The crankshaft gear drives the valve camshaft gear
and fuel camshaft gear by driving idle gear. The tim-
ings for opening and closing the valves is very im-
portant to achieve the effective air intake and gas
exhaust. When assembling, the appropriate timing
can be obtained by aligning the mark on the crank-
shaft gear with idle gear, idle gear with camshaft
gear, and idle gear with fuel camshaft gear.
3
-46
ENGINE - INSPECTION AND ADJUSTMENT

5.12.2 TIMING GEAR BACKLASH

UUVW214A
1.
2.
3.
4.
Set a dial indicator (lever type) with its tip on the
gear tooth.
Move the timing gear to measure its backlash while
holding the engaged gear to it.
If the backlash exceeds the allowable limit, check
the oil clearance of the shafts and the gear. (See
5.12.6)
If the oil clearance is proper but the backlash is
over the allowable limit, replace the gear.
Specifi ed
value
Backlash
Allowable
limit
UUVW215A
UUVW216A
0.042 ~ 0.115 mm
0.0017 ~ 0.0045 in.
0.2 mm
0.0079 in.
SUUV-W00 Apr. 2011