Oil Seal Replacement; Camshaft Bushing Replacement - Yanmar 2TNV70 Service Manual

(2) Idle gear
Mainly check the metal seizure and wear, and gear
damage.
Shaft outside diameter and metal inside diameter
measurement
Item
Shaft outside diameter
Metal inside diameter
Clearance
(3) PTO drive gear
Mainly check sticking of bearings on both sides, gear
damage and looseness, and gear shaft damage and
wear.

4.3.6 Oil seal replacement

1)
Replace the oil seal with a new one when the
gear case is disassembled.
Extract the used oil seal.
2) Insert a new oil seal by using the oil seal insertion
tool on the position of the gear case end face.
(Refer to the right figure.)
3) Apply lithium grease to the oil seal lips.
4) When wear is found on the oil seal contact part of
a crankshaft pulley, replace the pulley with a new
one. Carefully install the pulley so as not to
damage the oil seal.

4.3.7 Camshaft bushing replacement

Replace the bushing using the special service tool (Refer to No.7 of 4.1.2(1) in Chapter 4).
4. Disassembly, Inspection and Reassembly of Engines
Standard
44.950 44.975
45.000 45.025
0.025 0.075
72
M
mm
Limit
44.900
45.075
0.175