Kubota GL6000A-AU-B Workshop Manual page 101

GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
Main Bearing Case Assembly
1. Remove the two main bearing case screws 1 (4), and remove
the main bearing case assembly 1 (1) being careful with
crankshaft bearings 3 (5).
2. Remove the main bearing case assembly 2 (2) and the main
bearing case assembly (3) as above. Keep in mind, however,
that the thrust bearing (7) is installed in the main bearing case
assembly (3).
(When reassembling)
• Clean the oil passage in the main bearing cases.
• Apply clean engine oil on bearings.
• Install the main bearing case assemblies in original positions.
Since diameters of main bearing cases vary, install them in
order to marking (b) (1 for GL6000A-AU-B, GL6000D-AU-B and
1, 2 for GL9000A-AU-B, GL9000D-AU-B) from the gear case
side. (Refer to the figure.)
• Match the alignment number (a) on all main bearing case
assembly 1.
• Do the same for the main bearing case assembly 2 (2) and the
main bearing case assembly (3) too.
• When installing the main bearing case 1 and 2, face the mark
"FLYWHEEL" to the flywheel.
• Install the thrust bearing (7) with its oil groove facing outward.
• Make sure that the main bearing case moves smoothly after
tightening the main bearing case screw 1 to the specified
torque.
Tightening torque Main bearing case screw 1
(1) Main Bearing Case Assembly 1
(2) Main Bearing Case Assembly 2
(3) Main Bearing Case Assembly
(4) Main Bearing Case Screw 1
(5) Crankshaft Bearing 3
(6) Crankshaft Bearing 2
(7) Thrust Bearing
1-S39
ENGINE
13 to 15 N·m
1.3 to 1.6 kgf·m
9.4 to 11 lbf·ft
(a) Alignment Number
(b) Marking (1 or 2)
9Y1211607ENS0059US0
KiSC issued 06, 2016 A