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H21/32
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Engine Maintenance General
List of Hydraulic Jack Sets
엔진
정비
일반사항
유압잭
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목록
Section No.
G09510
Rev.
1C
HYUNDAI HEAVY INDUSTRIES CO., LTD
.
Engine & Machinery Division 08.06/KGM
Required tool
Torque
Section
no.
Description
Tool no.
Tool parts
Screw
Size
Pre-
tightening
for Stud
(Nm)
Hydraulic
Tightening
for Nut
(bar)
Hydraulic
Untightening
for Nut
(bar)
Stud length
after
tightening
(H mm)
M31000
M32120
Stud for
connecting
rod big end
91.410
91.470
M30
×
2.0
50
+ Molycote
950
950
+ 20 bar
(max. 5%)
80
2
1
+
−
M33200
Stud for
counter
weight
91.410
91.520
91.480
M30
×
2.0
50
+ Molycote
850
850
+ 20 bar
(max. 5%)
80
2
1
+
−
Stud for
flywheel
91.410
91.520
91.480
M30
×
2.0
50
+ Molycote
1050
1050
+ 20 bar
(max. 5%)
80
3
1
+
−
Note : 1. Hydraulic oil pressure for untightening is no20 bar (max. 5%) above hydraulic oil
pressure for tightening.
For example :
Tightening pressure : 1050 bar
Untightening pressure : 1070 bar (1050+20)
–
Normal
1103 bar (1050*1.05)
–
Maximum
+ Molycote : lubricating paste up to 400
℃
(Ex. GLEITMO 100)
(Coefficient of friction : 0.12)
2. Stud length after tightening (H)
If doubt, Please contact HHI- EMD A/S Dept.