GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 1999 🢒 Isuzu MD Steel Tilt (F Model) 🢒 Body and Accessories 🢒 Waterleaks 🢒 Generalized Testing

Checking with the Water Test Stands

    Watertest Stand Assembly
    Object Number: 154169 Size: MH
    (1)Pipe (0.5 x 36 in)
    (2)Reducing Tee, Right Stand Only (0.5 x 0.5 x 0.25 in)
    (3)Coupling, Left Stand Only, (0.5 in)
    (4)Tee, Left Stand Only (0.5 in)
    (5)Cross, Right Stand Only (0.5 in)
    (6)Pipe to Hose Nipple, Right Stand Only (0.5 in)
    (7)Female Hose Coupling (5/8 in)
    (8)Input Hose, Right Stand Only (2.0 ft) (5/8 in diameter)
    (9)Close Nipple (0.5 in)
    (10)Cross (0.5 in) with Weld-On Cap (0.5 in)
    (11)Nipple (0.5 x 12 in)
    (12)Cap (0.5 in)
    (13)Female Hose Coupling (5/8 in)
    (14)Cross Hose (12 ft) (5/8 in diameter)
    (15)Hose Quick Connect
    (16)Pipe to Hose Nipple (0.5 in)
    (17)Pipe (0.5 x 60 in)
    (18)Water Pressure Gage, Right Stand Only
    (19)Full Jet Spray Nozzle, No. 1/2GG-25 or Equivalent
    (20)Coupling (0.5 in)
  1. Assemble the water test stands.

    2. Object Number: 259438 Size: SH
  2. Position the stands one on each side of the vehicle. Water spray from the stands should overlap on the vehicle.
  3. Run the water at a volume of 15 liters (3.9 gallons) per minute and at a pressure of 138 kPa (20 psi), measured at the nozzle, for at least four minutes.
  4. Have someone inside the cab during the test in order to check for the location of any leaks.
  5. In order to check the windshield, aim the water spray 30 degrees down and 45 degrees toward the rear.

    6. Aim at the corner of the windshield.


    Object Number: 203462 Size: SH
  6. In order to check the side windows, aim the water spray 30 degrees down and 45 degrees toward the rear.

    7. Aim at the center of the rear quarter.

  7. In order to check the back window, aim the water spray 30 degrees down and 30 degrees toward the front.