jcb JS70 Service Manual

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Section 1 General Information
9803/6020
Section 1
1 - 1
Issue 1
Bolt and Nut Torque Specifications
Bolt and Nut Torque Specifications
Tighten the bolts and nuts according to the table. Before and after daily work, check the bolts and nuts for looseness and for
those missing. Tighten if loose and renew if missing.
Tighten the bolts and nuts after the first 50 hours of the running-in stage and every 250 hours thereafter.
Torque Tightening Table
Note: Use JCB Threadlocker and Sealer (High Strength) on those marked
† and tighten to the torque listed in the above
table.
No Tightening Point Bolt Diameter Wrench Tightening Torque
mm Nm kgf m lbf ft
1† Travel Motor M16 24
268~312 27.2~31.8 197~230
2† Drive Sprocket M14 22 173
~202 17.6~20.6 128~149
3† Idler Wheel M10 17 63
~73 6.9~7.4 46~54
4† Upper (Carrier) Roller M16 24 267~312 27.2~31.8 197~230
5† Lower (Track) Roller M12 19 109 ~127 11~13 80~94
6† Grease Cylinder M12 19 109
~127 11~13 80~94
7† Track Guard M12 19 109~127 11~13 80~94
8 Shoe Bolt U1/2 - 38 19 196 ~235 20~24 145~173
9† Counterweight M24 36 660
~770 67.3~78.5 487~568
10† Turntable Bearing (Undercarriage) M16 24 252~283 25.7~28.9 186~209
11† Turntable Bearing (Slew Frame) M16
24 252~283 25.7~28.9 186~209
12† Slew Equipment M16 24 273~318 27.8~32.4 201~235
13† Engine (Engine Mount) M16 24 167~216 17~22 123~159
14† Engine Bracket M10/M16 17/24
65~75/167~216 6.6~7.7/17~22 48~55/123~159
15 Radiator M10 17 30 ~35 3.1~3.6 22~26
16† Hydraulic Pump M10/M12 17/19 63~73/109~127 6.4~7.4/11~13 46~54/80~94
17† Hydraulic Oil Tank M16 24
160~172 16.3~17.5 118~127
18† Fuel Tank M16 24 160~172 16.3~17.5 118~127
19† Control Valve M12 19 53
~65 5.4~6.6 39~48
20
† Rotary Coupling M10 17 63 ~73 6.4~7.4 46~54
21 Cab M16 24 79~88 8~9 58~65
22 Battery M10 17 20~30 2~3 15~22

jcb JS70 Specifications

General

Brand	jcb
Model	JS70
Category	Excavators
Language	English