Measurement And Adjustment Of Propulsion Circuit Pressure; Measurement - Sakai R2-4 Shop Manual

INSPECTION AND ADJUSTMENT
2. MEASUREMENT AND ADJUSTMENT OF PROPULSION
CIRCUIT PRESSURE

2-1. Measurement

w AR NING
Confirm that the parking brake works properly before
measurement.
• Oil temperature during measurement : 50
① Remove plugs from high pressure gauge port (1-8) and
(1-9) of propulsion pump. Attach pressure gauge with
the adapter ⓗ .
• Adapter
• High pressure gauge port (Reverse) : (1-8)
• High pressure gauge port (Forward) : (1-9)
• Pressure gauge
② Confirm that F-R lever is "N".
③ Apply parking brake by pressing parking brake switch
button.
④ Set speed change switch to "
⑤ Start the engine and set throttle lever to "FULL".
⑥ Establish a condition in which machine propulsion load
becomes maximum. (Pressure does not build up unless
propulsion load is applied.)
⑦ With propulsion load at maximum, slowly move F-R lever
to the side to be measured.
⑧ Read pressure indicated by pressure gauge.
⑨ After measuring, promptly return F-R lever to "N".
Maximum circuit pressure
★
(high pressure relief valve setting)
• The numbers "1-8" and "1-9" appearing in above illustrations are consistent with lead line numbers shown in
illustration of propulsion pump in "2-2. Hydraulic Component Specifications" (page 4-008).
9-002
°C (122
± 5
: 9/16-18UNF
: 0 to 50 MPa
(0 to 7,250 psi)
".
: 41.8 MPa (6,061
± 1.0 ± 145
°F)
± 9
h h
psi)
1-8 1-8
1-9 1-9
R2-4-09001 R2-4-09001
PG001014 PG001014