Piston And Connecting Rod - Kubota WG1605-G-E3 Workshop Manual

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM

(3) Piston and Connecting Rod

Piston Pin Bore I.D.
1. Measure the piston pin bore I.D. in both the horizontal and
vertical directions with a cylinder gauge.
2. If the measurement exceeds the allowable limit, replace the
piston.
Factory specification
Piston pin bore I.D.
Allowable limit
Oil Clearance between Piston Pin and Small End Bushing
1. Measure the O.D. of the piston pin where it contacts the bushing
with an outside micrometer.
2. Measure the small end bushing I.D. with an inside micrometer,
and calculate the oil clearance.
3. If the oil clearance exceeds the allowable limit, replace the
bushing. If it still exceeds the allowable limit, replace the piston
pin.
Factory specification
Oil clearance between
piston pin and small end
bushing
Allowable limit
Piston pin O.D. Factory specification
Small end bushing I.D. Factory specification
Replacing Small End Bushing
(When removing)
1. Press out the used bushing using a small end bushing replacing
tool. (Refer to "5. SPECIAL TOOLS" on page G-24.)
(When installing)
1. Clean a new small end bushing and bore, and apply engine oil
to them.
2. Using a small end bushing replacing tool, press in a new
bushing (service parts) taking due care to see that the
connecting rod hole matches the bushing hole.
[Servicing parts dimension]
Factory specification
Oil clearance between
piston pin and small end
bushing (Spare parts)
Allowable limit
Small end bushing I.D.
Factory specification
(Spare parts)
(1) Seam
(2) Oil Hole
1-S49
ENGINE
22.000 to 22.013 mm
0.86615 to 0.86665 in
22.03 mm0.8673 in.
9Y1210661ENS0050US0
0.014 to 0.038 mm
0.00056 to 0.0014 in.
0.10 mm
0.0039 in.
22.002 to 22.011 mm
0.86622 to 0.86657 in
22.025 to 22.040 mm
0.86713 to 0.86771 in
9Y1210661ENS0074US0
0.014 to 0.038 mm
0.00056 to 0.0014 in
0.15 mm
0.0059 in.
22.076 to 22.146 mm
0.86914 to 0.87188 in.
(A) When Removing
(B) When Installing
(a) 0.79 rad (45 °)
9Y1210661ENS0075US0
KiSC issued 01, 2012 A