
2 minute read
Removal and Installation of Cab Assembly
from Sumitomo SH250-5 SH250-5LR Hydraulic Excavator Service Repair Manual WLSM2105-00W - PDF DOWNLOAD
Caution ・ Be sure to stop the engine before beginning work. ・ Be sure to inspect the wire rope and other lifting equipment before beginning work. ・ Do not stand or pass under the suspended load.
Items to prepare •Wrenches (13 mm, 19 mm) •Box wrenches (10 mm, 13 mm, 19 mm) •Eyebolt (M24) x 4 •Chains (wire ropes) (with the required breaking load) •Crane (with the required lifting capacity) •Lubricating oil •Rag •Cleaning fluid •Wood planks, etc. 1.Removal of Cab Assembly [1] Remove the operator's seat. (For details, see "Removal and Installation of Operator's Seat".) [2] Use a box wrench (10 mm) to remove the 4 bolts (1) and another box wrench (13 mm) to remove the 2 bolts (2), and then remove the rear cover (3).
[3] Use a box wrench (10 mm) to remove the 2 bolts (4), and then remove the air conditioner ducts on both sides (5).
1 Bolt 2 Bolt 3 Rear cover 4 Bolt 5 Duct
[4] Remove the air conditioner ducts (6) and (7) by pulling them forward.
[5] Use a wrench (13 mm) to remove the 4 bolts (8), and then remove the brackets (9).
[6] Remove the air conditioner duct (10).
6 Duct 7 Duct 8 Bolt 9 Bracket 10 Duct
[7] Remove the radio antenna (11).
[8] Use a wrench (13 mm) to remove the bolts (12) for the ground wire (13) connecting the cab and frame.
[9] Remove the connectors (14) and (15).
11 Radio antenna 12 Bolt 13 Ground wire 14 Connector 15 Connector
[10]Remove the washer fluid hose (16).
[11]Use a wrench (13 mm) to remove the 4 bolts (17) each, and then remove the rear brackets (right and left) (18) and (19).
[12]Remove the 3 butterfly screws (20), and then remove the cover (21).
16 Hose 17 Bolt 18 Rear bracket (right) 19 Rear bracket (left) 20 Butterfly screw 21 Cover
[13]Remove the 2 butterfly screws (22), and then open the cover (23) of the outside air filter.
[14]Remove the outside air filter (24).
Slide the suction duct connected with the air conditioner unit in the cab from the duct flange and remove it.
[15]Remove the 4 caps (25) from the top of the cab.
22 Butterfly screw 23 Cover 24 Filter 25 Cap
[16]Install the 4 eyebolts (M24) (26) in place of the removed caps. •Fully tighten the eyebolts, and then loosen them by a half turn.
[17]Use chains (27) and crane to secure the cab.
[18]Use a Phillips screwdriver to remove the 3 screws (28), and then remove the cover (29).
26 Eyebolt 27 Chain 28 Screw 29 Cover
[19]Use a wrench (19 mm) to remove the 7 bolts (30) from the cab.
[20]Use chains (32) and crane to remove the cab (31).
30 Bolt 31 Cab 32 Chain
[21]Thoroughly check that the location is safe before lowering the cab on wood planks (33). •Thoroughly secure the cab with the chains and crane so that it does not fall down.
2.Installation of Cab Assembly
To install, perform the reverse of the removal procedure.
The tightening torque for the cab assembly installation bolts is 157 N•m.
33 Wood plank