Group 2 Specification: 1. Major Component
Group 2 Specification: 1. Major Component
1. MAJOR COMPONENT
Boom cylinder Main control valve Main pump Air cleaner Battery Step
Bucket link Bell crank Bucket cylinder Cab Precleaner Muffler Counter weight
Boom Front axle Steering cylinder Step Transmission Rear axle Fuel tank
                                                       1-10
2. SPECIFICATIONS
 1) WITHOUT TOOTH AND CUTTING EDGE TYPE BUCKET
  B
                                         F
                                         I
                                                                                    J
                                                     4959
                                                                                H
3769
                                                                                                                 2903
 40Ş
                                                                                                                        C
                                                                    G
                      50
                        3
                    5830 0
                                                                                        D
                                                                                            E             1842
                                                                                        A
                                                      1-11
2) BOLT-ON CUTTING EDGE TYPE BUCKET
  B
                                              F
                                              I
                                                                              J
                                                     4959
                                                                          H
                                                                   K
                                                            3769
 40Ş
                                                                                                          2903
                                                                                                           C
                                                            G
                       50
                         3
                    5858 0
                                                                                  D
                                                                                      E            1842
                                                                                  A
                                                     1-12
3) WITH TOOTH TYPE BUCKET
  B
                                               I
                                          F
                                                                              J
                                                     4959
                                                                          H
                                                             3769
                                                                    K
                                                                                                         2903
 40Ş
                                                                                                                C
                                                            G
                       50
                         3
                     5918 0
                                                                                  D
                                                                                      E           1842
                                                                                  A
                                                     1-13
3. WEIGHT
Item kg lb
                                         1-14
4. SPECIFICATION FOR MAJOR COMPONENTS
1) ENGINE
Item Specification
 2) MAIN PUMP
                                                                Specification
                         Item
                                               up to #0052                      #0053 and up
                                         Fixed displacement            Fixed displacement
Type
                                         tandem gear pump              tandem gear pump
Capacity                                 2ź36.65cc/rev                 41+37cc/rev
Maximum operating pressure               220kg/cm (3129psi)
                                                    2
                                                                       220kg/cm2(3129psi)
Rated oil quantity                       2ź77ֻ.min(20.3U.S.gpm)        163ֻ/ min(43U.S.gpm)
Rated speed                              2200rpm                       2200rpm
                                      1-15
 3) BRAKE PUMP
                                                                       Specification
                          Item
                                                         up to #0052                   #0053 and up
                                                  Fixed displacement           Fixed displacement
Type
                                                  tandem gear pump             tandem gear pump
Capacity                                          8.4cc/rev                    8cc/rev
Maximum operating pressure                        150kg/cm (2130psi)
                                                              2
                                                                               150kg/cm2(2130psi)
Rated oil quantity                                18ֻ/ min(4.75U.S.gpm)        17ֻ/ min(4.5U.S.gpm)
Item Specification
Type                                              2 spool
Operating method                                  Hydraulic pilot assist
Main relief valve pressure                        220kg/cm2(3129psi)
Overload relief valve pressure                    240kg/cm2(3414psi)
Item Specification
6) CYLINDER
Item Specification
                                               1-16
7) DYNAMIC POWER TRANSMISSION DEVICES
Item Specification
                                        1-17
5. TIGHTENING TORQUE OF MAJOR COMPONENT
 No.                             Items                           Size        kgşm         lbşft
                                                        1-18
6. TORQUE CHART
 Use following table for unspecified torque.
 1) BOLT AND NUT
  (1) Coarse thread
                                        8T                                  10T
     Bolt size
                            kgşm                   lbşft         kgşm                 lbşft
   M 6 ź 1.0             0.85 ~ 1.25           6.15 ~ 9.04    1.14 ~ 1.74          8.2 ~ 12.6
   M 8 ź 1.25             2.0 ~ 3.0            14.5 ~ 21.7    2.73 ~ 4.12         19.7 ~ 29.8
   M10 ź 1.5              4.0 ~ 6.0            28.9 ~ 43.4     5.5 ~ 8.3          39.8 ~ 60
   M12 ź 1.75             7.4 ~ 11.2           53.5 ~ 79.5     9.8 ~ 15.8           71 ~ 114
   M14 ź 2.0             12.2 ~ 16.6           88.2 ~ 120     16.7 ~ 22.5          121 ~ 167
   M16 ź 2.0             18.6 ~ 25.2            135 ~ 182     25.2 ~ 34.2          182 ~ 247
   M18 ź 2.5             25.8 ~ 35.0            187 ~ 253     35.1 ~ 47.5          254 ~ 343
   M20 ź 2.5             36.2 ~ 49.0            262 ~ 354     49.2 ~ 66.6          356 ~ 482
   M22 ź 2.5             48.3 ~ 63.3            350 ~ 457     65.8 ~ 98.0          476 ~ 709
   M24 ź 3.0             62.5 ~ 84.5            452 ~ 611     85.0 ~ 115           615 ~ 832
   M30 ź 3.5              124 ~ 168             898 ~ 1214    169 ~ 229           1223 ~ 1655
   M36 ź 4.0              174 ~ 236            1261 ~ 1703    250 ~ 310           1808 ~ 2242
                                                  1-19
2) PIPE AND HOSE
3) FITTING
                                           1-20
7. RECOMMENDED LUBRICANTS
 Use only oils listed below or equivalent.
 Do not mix different brand oil.
                                                                      Ambient temperature Ş
                                                                                          C( Ş
                                                                                             F)
                                     Capacity
 Service point     Kind of fluid
                                    ֻ(U.S. gal)              -20      -10       0        10     20       30 40
                                                             (-4)     (14)     (32)     (50)   (68)     (86) (104)
SAE 30
                                                                    SAE 10W
 Engine oil pan     Engine oil        16.4(4.3)
                                                                               SAE 10W-30
SAE 15W-40
Torque converter
                        Oil            25(6.6)                                 DEXRONє
  Transmission
                                   Front : 40(10.6)
     Axle            Gear oil      Rear : 40(10.6)                           SAE 80W-90LSD/API GL-5
                                    Tank:                                ISO VG 32
                                     75(19.8)
 Hydraulic tank    Hydraulic oil                                                 ISO VG 46
                                    System:
                                    120(31.7)                                           ISO VG 68
                                                                      NLGI NO. 1
    Fitting
                     Grease         As required
(Grease nipple)
                                                                                        NLGI NO. 2
                    Mixture of
                    antifreeze
   Radiator                            35(9.2)                        Ethylene glycol base permanent type
                    and water
                     50 : 50
1-21