Servicing Points - Yanmar 3TNV Series Service Manual

4. Disassembly, Inspection and Reassembly of Engines

4.3.4 Servicing points

Point1
[Disassemble]
Remove the crankshaft pulley using a gear puller
after removing the crankshaft pulley set bolt.
When removing the pulley using the gear puller,
use a pad and carefully operate so as not to
damage the thread. Set the gear puller securely
to prevent the pulley from being damaged.
[Reassemble]
Apply lithium grease to the oil seal lips. For the
oil seal with double lips dust seal, further slightly
apply engine oil on the lips so as not to damage
them.
Clean by wiping off any oil on both taper surfaces
using detergent.
Be sure to use the crankshaft pulley installing tool
so as not to damage the oil seal lips. (See 4.3(6)
Oil seal replacement)
When installing the crankshaft pulley, apply lube
oil to the set bolt to tighten and carefully assemble
so as not to damage the oil seal.
Model
3TNV82A TNV88
4TNV94L/98/106(T)
Point2
[Reassemble]
When installing the gear case, do not forget to
install the two reinforcing bolts at the center.
Measure the backlash of each gear.
3TNV82A 88
Crankshaft gear,
Camshaft gear,
Fuel injection pump gear,
Idle gear, PTO gear,
Lubricating oil pump gear
4TNV94L-106(T)
Crankshaft gear,
Camshaft gear,
Fuel injection pump gear,
Idle gear, PTO gear,
Balancer gear
(only 4TNV106(T) )
Lubricating oil pump gear
Apply sealant and install the gear case by
correctly positioning the two dowel pins.
N m(kgf-m)
Tightening torque
112.7 122.7 (11.5 12.5)
107.9 127.5 (11.0 13.0)
Standard Limit
0.07 0.15 0.17
0.11 0.19 0.21
Standard Limit
0.08 0.14 0.16
0.12 0.18 0.20
0.09 0.15 0.17
mm
84