Kubota M5040, Workshop Manual

Page: 189 / 559

1-S63
M5040, M6040, M7040, WSM ENGINE
Replacing Balancer Shaft Bearing
1. Remove the used balancer shaft bearings (1), (2), (3) and (4).
2. Set the new bearing to the balancer shaft bearing replacing tools.
(Refer to “8. SPECIAL TOOLS” at “G. GENERAL” section.)
Confirm that the cut off position of the bearing (
C ) matched with
the pin of the replacing tool.
3. Install the new bearing from flywheel housing side keeping the
ditch (7) of the replacing tool horizontal.
(The installing order : bearing D (1)
→
bearing C (2)
→
bearing A
(4), B (3))
IMPORTANT
Q
• Be sure to align the oil hole of bearing and crankcase.
Otherwise the balancer shaft may be seized and engine may
get damaged.
• Apply engine oil to the bearing surface.
(Reference)
W1010756
Bearing Code No. Quantity
Bearing A 1G772-26960 1
Bearing B 1G772-26970 1
Bearing C 1G772-26980 2
Bearing D 1G772-26990 2
(1) Bearing D
(for Balancer Shaft 1 and 2)
(2) Bearing C
(for Balancer Shaft 1 and 2)
(3) Bearing B (for Balancer Shaft 2)
(4) Bearing A (for Balancer Shaft 1)
(5) Balancer Shaft 1 Bearing Replacing
Tool (3 kinds of tools available)
(6) Balancer Shaft 2 Bearing Replacing
Tool (3 kinds of tools available)
(7) Ditch
A : Front Cover Side
B : Flywheel Housing Side
C : Cut Off Position of Bearing
D : Oil Hole Position of Bearing
(a) 0.035 rad (2 °)
(b) 0.44 rad (25 °)
(c) 0.72 rad (41 °)
(d) 1.57 rad (90 °)
(e) 0.39 rad (22.5 °)
(f) 1.57 rad (90 °)
KiSC issued 06, 2008 A