GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC K Pickup - 4WD 🢒 Body and Accessories 🢒 Waterleaks 🢒 Waterleak Test Preparation

    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 watertest stands as shown.

    2. Object Number: 264875 Size: SH
  2. Position the stands as shown.

    3. Object Number: 203462 Size: SH
  3. Water spray from the stands should overlap on the vehicle.
  4. Run the water at a volume of 14 liters (3.7 gallons) per minute.

    5. The water should be at a pressure of 155 kPa (22 psi, measured at the nozzle) for at least 4 minutes.

  5. Have a second person located inside the cab during the test in order to check for any leaks.

    6. Object Number: 264875 Size: SH
  6. In order to check the windshield, aim the water spray 30 degrees down and 45 degrees toward the rear.

    7. Aim the water towards the corner of the windshield.

  7. In order to check the side windows, aim the water spray 30 degrees down and 45 degrees toward the rear.

    8. Position the water towards the center of the rear quarter.

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