938H Wheel Loader and IT38H Integrated Toolcarrier Hydraulic System Caterpillar


Pilot Operated Hydraulic Control

Usage:

938H JKM
Note: The following graphic shows the 257-5663 Pilot Operated Hydraulic Control Group (4-Function). The specifications also apply to the 257-5662 Pilot Operated Hydraulic Control Group (3-Function) and the 257-5661 Pilot Operated Hydraulic Control Group (2-Function).


Illustration 1g01441830



Illustration 2g01441876

"View C-C"

(1) 263-1493 Push Button Switch (Downshift)

(2) 265-8171 Push Button Switch (Horn)

(3) Apply two 168 ± 1 mm (6.6 ± 0.04 inch) strips of 282-0594 Tape to 281-2913 Brace in two places.

(4) 281-2913 Brace

(5) Apply 8T-9005 Seal to Console Assembly.

(6) Assemble 281-2921 Receptacle to Console Assembly.

263-1493 Push Button Switch (Downshift)




Illustration 3g01269721

263-1493 Push Button Switch (Downshift) ()

(7) Installation torque for the switch ... 5 ± 1 N·m (44 ± 9 lb in)

Operating force ... 12 ± 1.3 N (2.7 ± 0.3 lb)

Temperature range ... −40 °C (−40 °F)

to ... 85 °C (185 °F)

Current draw at 28 VDC ... 1.5 amperes

Contact (A) is normally closed.

Contact (B) is normally open.

Contact (C) is common.

265-8171 Push Button Switch (Horn)




Illustration 4g01269726

265-8171 Push Button Switch (Horn)

(8) Installation torque for the switch ... 5 ± 1 N·m (44 ± 9 lb in)

Operating force ... 12 ± 1.3 N (2.7 ± 0.3 lb)

Temperature range ... −40 °C (−40 °F)

to ... 85 °C (185 °F)

Current draw at 28 VDC ... 1.5 amperes

Contact (A) is normally closed.

Contact (B) is normally open.

Contact (C) is common.

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