|
Before you start bleeding, go around and make sure you can open each bleeder. A frozen or broken bleeder half-way thru the job takes a lot of the fun out of it.
While doing this bleeder check, you can also expell much of the old fluid in the caliper by depressing the pistons with bleeder open and piped to your drain container.
Since the pre-ABS) 240 has two separate hydraulic systems, the recommended sequence (below) bleeds each system separately.
On the front calipers, the upper two cylinders form an inverted "U", with a single bleeder at the highest point. The lower two cylinders form an upright "U", with bleeders at the two high points. The upper and lower cylinders are each in a separate hydraulic system.
(See illustrations in Bentley, p 500-1 and Haynes, p 9-13)
Either A or B can be done first:
System A:
1) Left rear
2) Left front - Upper piston chambers (single bleeder, top)
3) Right front - Upper piston chambers (single bleeder, top)
System B:
4) Right rear
5) Right front - Lower piston chambers (inner and outer bleeders, either first)
6) Left front - Lower piston chambers (inner and outer bleeders, either first)
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.
|
