Crank And Gearbox Housing; Shaft Seal, Water Pump - Rotax 125 MAX DD2 Repair Manual

Crank and gearbox housing

✔ Inspect both housing halves for cracks and
damage.
✔ Inspect the sealing surfaces for damage.
✔ Inspect all threads for cleanliness and ease of
running.
◆ Note:
The cylinder attachment stud bolts
must be screwed into the housing,
longest thread first, after applying
Loctite 221. The tightening torque is
5 Nm.
✔ Inspect the oil bores of the main bearing for ease
of passage and clean using compressed air if necessary.
✔ Inspect the overflow hole for ease of passage and clean using compressed air if necessary.
✔ Inspect the ball and needle bearings for ease of running and erosion of material (Pitting).

Shaft seal, water pump

➩ Remove both shaft seals from the water pump
shaft with a suitable tool.
➩ Grease the new shaft seals in the region of the
seal lip with Molycote 111 before fitting.
➩ Insert the new shaft seals as shown in Fig. 35
using the installation tool.
◆ Note:
Use the special tool "Installation tool"
- ROTAX No. 676 021.
◆ Note:
Note the installed position - the
tubular spring of the outer ring seal
must point outwards, the tubular
spring of the inner ring seal is not
visible, see Fig. 35.
➩ Press in the outer shaft seal with the installation
tool up to the detent, as shown in Fig. 36.
◆ Note:
Use the special tool "Installation
tool" - ROTAX No. 676 021.
◆ Note:
Using the installation tool a shaft
seal can also be replaced with the
engine in the assembled condition.
Page 27
Repair Manual 125 MAX DD2
Fig. 34, figure
similar
Fig. 35
Fig. 36
Issue 01/2006