Komatsu PC88MR-10 Shop Manual page 1206

50 Disassembly and assembly
Cab and its attachments
[*1]
Insert ducts (5) and (6) (2 pieces) until they hit
the root of duct (54) in advance. Install the
machine monitor, pull up the ducts, and then
insert them to duct (55).
[*2]
Bolt (46) of mounting nuts (47) and (48) is
tightened together from the floor frame bottom.
Be careful for them not to rotate together when
tightening.
Mounting nuts (47) and (48):
235 to 309 Nm {24 to 31.5 kgm}
Mounting bolt (46):
235 to 309 Nm {24 to 31.5 kgm}
[*3]
Mounting bolt (48):
235 to 309 Nm {24 to 31.5 kgm}
Mounting bolt (49):
235 to 309 Nm {24 to 31.5 kgm}
50-178 PC88MR-10