Tech


ATR HQ-WB Astra Power Steering Pump Bracket Assembly Instructions

 

Pre-Installation Notes:

-Designed to use: Speedflow 741-06 bump tube fitting with -6AN 90 for high pressure line from pump.

-HQ-HZ Imperial steering boxes use 11/16 -18 Inverted flare to -6AN

-WB Metric steering boxes use M16x1.5 Bump Tube fitting to -6AN

-Maximum recommended front wheel diameter- 26”

 

Parts Included:

QTY

Part

1

ATR Bracket

2

7/16 UNC Bolts

2

7/16 Washers

 

Installation Procedure

  1. Remove horn and bracket located on driver side radiator support to gain access to the inner guard.
  2. Remove 2 of the 3 original steering box bolts from chassis. (See figure. 1)
  3. Place the paper template provided onto the driver side inner guard, aligning the 2 smaller bolt holes with the middle and inner most bolt. Mark centre point of circle cut out onto the inner guard.
  4. Cut hole in the inner guard. (114-120mm diameter depending on desired fitment and clearance) Recommended to cut minimum hole size first then check pump placement in hole to make any adjustments.
  5. Remove small bracket from the Astra pump that retains the wiring harness.
  6. Place pump assembly into ATR bracket and tighten the 3x M6 Nuts.
  7. Place the 2x 7/16 washers onto the 2x 7/16 bolts. Pass the bolts through the ATR bracket holes from the inside out.
  8. Install bump tube adapter fitting into pump housing. Pass the return and high-pressure lines through the clearance hole and connect to the pump. (Paying attention that the lines have adequate clearance around them.)
  9. Install complete assembly into vehicle from below the inner guard, passing the pump reservoir up through the recently cut hole. Pass the 7/16 mounting bolts through the chassis rail and tighten into steering box. *Note- Bumper iron brackets may need to be loosened and re-positioned to create clearance to pump assembly. HJ-HZ vehicles require the outer bumper bracket to be removed or modified in order to be retained.
  10. The wiring harness may be passed up through the existing indicator light wiring hole in the inner guard.