Inspection Of Water Pump Shaft; Inspection Of Balance Shaft Drive - Rotax 125 MAX evo Repair Manual

INSPECTION OF WATER PUMP SHAFT

Instruction See
1. Check the water pump shaft in the areas around the two shaft seal rings; if it is excessively
worn it must be replaced.
2. Check the impeller for damage and/or any abnormal deformation, and replace it if
necessary.
Figure 5.22: Water pump shaft
______________________________________________________

INSPECTION OF BALANCE SHAFT DRIVE

General
N N O O T T E E
If one of the balance wheels has cracks or if backlash of the balance wheels at
the spline can be seen, both balance wheels must be replaced.
Instructions See
1. Check balance gears (1) for cracks.
2. Place balance gears on the spline, the balance shaft or crankshaft and inspect balance
gears for backlash at the spline.
3. Check outer teeth of the two balance gears for signs of wear. If the teeth of one of the bal-
ance gears shows signs of wear, both balance gears must be replaced.
4. Inspect condition of O-ring (2).
N N O O T T E E
The balance gears (1) and the O-ring (2) should be replaced at least every 50 op-
erating hours.
Effectivity: 125 MAX evo, Junior MAX
evo, Mini MAX evo, Micro MAX evo
Edition - February 01 2018 /Rev. 0
BRP-Rotax
REPAIR MANUAL
Figure: Water pump shaft.
Pump shaft
1
Impeller
3
Figure: Balance shaft drive.
2 Dowel 4x16
Chapter 5
Page 27