Pages 4–7 (4 pages)
Operating principle, fluid and valve adjustment
From the 1928–1940 Ford Houdaille Shock Absorber Service Bulletin
How Ford Houdaille double-acting shock absorbers work by hydraulic resistance, with the 1940 automatic seal packing gland. Covers the 5,000-mile fluid inspection, filling and air removal, leaks, tightening the adjustable packing gland with the right wrench, and adjusting needle-type and rotary-type valves for warm or cold weather.
Read this section free, starting at page 4What this section covers
- Operating principle
- Replenishing fluid every 5,000 miles
- Leaking shock absorbers
- Packing gland wrenches
- Needle valve and rotary valve settings
- Type
- Service Bulletin
- Models
- Ford Model A, B, 18, 40, 48, 68, 74, 78, 81A, 91A, 01A and Mercury 99A, 1928–1940
- Publication
- Subject No. 18080
- Pages
- 42
What’s inside
Service bulletin
- Cover, contents and service recommendationsCover note, table of contents dated January 1, 1940, and the recommended procedure for restoring ride quality: tire pressure, spring lubricant, fluid level, leakage and valve pointer settings.pp. 1–3
- Operating principle, fluid and valve adjustmentpp. 4–7
- Guide sheets: shocks, levers, links and parts kitspp. 8–11
- Rebuilding 1933-1936 shock absorbers (48-18015 and 40-18015 types)pp. 12–19
- Rebuilding 1937 and early 1938 shock absorbers (68 and 81A types)pp. 20–29
- Rebuilding late 1938 and 1939 shock absorbers (81A, 91A and 99A types)pp. 30–38
- Instructions for peening valve spoolHow to check whether the spool in the lower end of the shaft has turned, using gauge plate HEC-4953, and how to realign and peen it with drift HEC-4891.pp. 39–40
- Functioning diagram of 1940 shock absorbersTwo Ford Motor Company service bulletin sheets dated October 6, 1939 showing compression stroke and rebound stroke flow in the 1940-type instrument, with the replenishing valve and valve adjusting end labeled.pp. 41–42