Load-Sensing G-Valve (Lsgv) - Ford TRADER Workshop Manual

Type 1
Type 2
Type 3
Type 4
9TGOPX·058
-------_._-_.-
9TGOPX.()6,
13.734 (140. 1.991)
MASTER CYLINDER kPa
FLUID PRESSURE. (kglcm
1
•
psi)
9TGOPX.Q62
Part No.
p,
BRAKE SYSTEM
LOAD-SENSING G-VALVE (LSGV)
(EXCEPT LHD 14 AND 17 FEET CARGO DECK)
On-vehicle Inspection
Function check
p
1. Connect pressure gauges (commercially available) to the
input and output sides of the LSGV as shown.
2.
Bleed the air from the bleeder screw.
3.
Jack up the rear of the vehicle so that it is at an angle of
15 degrees (rear tires 50-60 cm (19.69-23.82 in) above
the ground).
4. Open the bypass valve of the LSGV.
Caution
• Do not tum the valve more than 360 0
•
5. Gently depress the brake pedal until the master cylinder
pressure becomes P1.
6. Close the bypass valve and confirm the P1 value won't
change.
7. Apply additional pressure until the master cylinder pressure
becomes 13,734 kPa (140
kg/cm
2
1,991 psi), and then
measure output fluid pressure P2.
8. After the measurement, release the input side fluid pressure.
9. Change P1 to P3 and follow step 4 to 8.
10. If the measured value is within the standard fluid pressure
shown in the table below, the LSGV is good.
If the value is out of standard, replace the LSGV assembly ..
kPa (kg/cm
2 ,
psi)
P2 P3
P4
W21043900 98 (10. 14)
4,120 (42. 597)-4,905 (50, 711) 3,139 (32. 455)
10.595 (108. 1.536)
min
W211 43 900 98 (10. 14) 4.807 (49. 697)-5.592 (57, 811) 4,905 (SO. 711) 10.595 (108. 1.536) min
W221 43900
98 (10.14)
4.807 (49. 697)-5.592 (57. 811)
4,905 (SO. 711) 11.772 (120.1.706)
min
W840 43 900 98 (10. 14)
4.513 (46. 654)-5,297 (54. 768)
3.531 (36. 512) 13.832 (141. 2.005)
min
Type 1: 10 feet cargo deck (rear single tire)
Type 2: 10
feet cargo deck (rear double tire)
Type 3: 14 feet cargo deck (SL engine)
9TFOPX'()()7
Type 4: 14 feet cargo deck and 17 feet cargo deck (SL TURBO and TF engines)
P-25