Disassembly And Reassembly Of The Crank Case - Hitachi CM 75EAP Service Manual

14. Disassembly and reassembly of the crank case

[Tool required]
• Hex. bar wrench (4 mm)
(1) Disassembly
• Remove the four Bolts M5 [13] by using a hex. bar wrench (4 mm). You can now remove Crank Case
(A) [6], Crank Case (B) [44], and the Crank Shaft [1].
• To disassemble Ball Bearing 6202C3 [4] and the Oil Seal [5], push both from the Oil Seal [5] side.
(2) Reassembly
Reassembly can be conducted by reversing the disassembly procedure. However, special attention
should be given to the following items.
• Do not reuse the Oil Seal [5] and Ball Bearing 6202C3 [4] when disassembled from Crank Case (A)
[6] and Crank Case (B) [44].
• Do not reuse the Crank Case Packing [3].
• Do not reuse the four Bolts M5 [13].
• Apply 50 to 100 mg of Piloknock Universal No. 0 (JX Nippon Oil & Energy) between the lips of the Oil
Seal [5].
• Carefully clean the Crank Shaft [1] by using gasoline before mounting.
• Before mounting Crank Case (A) [6] and Crank Case (B) [44], fully degrease their threaded holes.
Mount them without pinching Fuel Pipe (FKM) [150].
• Assemble the Crank Case Packing [3] by correctly aligning its hole position without any deviation.
After matching Crank Case (A) [6] and Crank Case (B) [44], check their outer peripheries and make
sure the Crank Case Packing [3] is along the Crank Case mating face.
• Cut off the protrusion of the Crank Case Packing [3] at the mating face of the Cylinder [146] after
mounting.
NOTE: Do not break the Crank Case Packing [3] when cutting it.
• Crank case
[45]
[46]
[44]
[5]
[4]
[1]
[4]
-22-
[3]
[5]
[6]
[13]