Cvt Vent Backboard Installation; Drive Gear Removal; Drive Gears Inspection - TGB EST 1000 Service Manual

5-3. ENGINE BOTTOM END
NOTE: Wrong oil bore position will stop oil
supply to plain bearings and will damage the
engine.
NOTICE: The partition of the plain bearings
must be positioned near to oil bore in
counterclockwise direction.

CVT Vent Backboard Installation

▪ For installation, reverse the removal
procedure.
▪ Pay attention to the following details.
NOTE: At installation, replace CVT cover
gasket and oil seal.
▪ Tighten CVT cover bolts following the
illustrated sequence.
DRIVE GEARS
The drive gears are located on the engine CVT
side behind the CVT vent backboard cover.

Drive Gear Removal

▪ Remove CVT cover.
▪ Withdraw idle gear.
▪ Remove oil pump gear c-clip and washer.
▪ Remove the bolts and pull out water pump.
▪ Remove c-clip and pull out the water pump
gear.

Drive Gears Inspection

Idle Gear/Oil Pump Drive Gear/Water
Pump Drive Gear
▪ Inspect gears for wear or other damage.
▪ Replace if damaged.
▪ Check if oil seal is brittle, hard or damaged.
Replace if necessary.
▪ Inspect gear for wear or other damage.
▪ Check ball bearing for excessive play and
smooth operation. Replace breather gear
ssary.
assembly if nece
5-3-8
③
1. Idle gear
2. Oil pump gear
3. Oil pump
4. Water pump drive gear
①
②
④