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ASME PALD 11c-1989 — Wheel Dollies Addenda (c)
📐 ASME PALD 11c-1989 is the third and final addenda (Addenda c) to ASME/ANSI PALD 11-1986, the Wheel Dollies volume of the Safety Standards for Portable Automotive Lifting Devices. Approved by ANSI on December 14, 1989, and issued January 31, 1990, it is the third replacement-page revision of the 1986 edition, flagged with margin note (c) while previous addenda changes are flagged (a) and (b). This addenda revises the introduction, scope, terminology, product marking clauses, and warning provisions, concluding the revision cycle for this edition of the wheel dolly standard.
💡 Addenda (c) is the final addenda to PALD 11-1986. With “PALD 11-1986 + 11a + 11b + 11c” the complete current version set is formed, until a new edition supersedes it.
1. Main Revisions in Addenda (c) 📌
PALD 11c-1989 revises the first paragraph of General (editorial), Section 1, Section 2, product marking clauses 4.2, 4.3, and 4.4, and warning clauses 7.1.3(c), 7.1.3(d), and 7.1.4. The marking revisions further define the specific requirements for wheel dolly product marking and identification, while the warning revisions refine the safety warnings for operation and maintenance.
| Location | Clause | Change |
|---|---|---|
| General | Introduction | First paragraph editorially revised |
| Section 1 | Framework | Revised |
| Section 2 | Definitions | Revised |
| 4.2 / 4.3 / 4.4 | Product marking | Revised |
| 7.1.3 (c)/(d) | Warnings | 7.1.3(c) revised; (d) revised |
| 7.1.4 | Warnings | Revised |
⚠️ Addenda (c) revises marking clauses 4.2–4.4 and warning clauses 7.1.3 and 7.1.4. Equipment marking checks and site safety briefings should follow the latest text.
2. Improving Marking and Warning Requirements 🏷️
This addenda revises marking clauses 4.2, 4.3, and 4.4, further defining the manufacturer’s name or trademark, rated capacity, model, and marking locations so that equipment information is clear, permanent, and traceable. The revised warning clauses 7.1.3(c), (d), and 7.1.4 refine the hazard situations that must be warned about in operation, maintenance, and inspection — such as overload, off-center load, use on inclined surfaces, and unlocked adjustable mechanisms.
🚨 The refined warnings zero in on high-risk behaviors: overload, improper loading, use on inclined or soft ground, and unlocked adjustable mechanisms. These are the main sources of wheel dolly accidents and must be covered item by item in safety briefings.
3. Wheel Dolly Technical Requirement Essentials 📏
Wheel dollies support and move wheels, tires, and brake assemblies. The revised marking and warning requirements, combined with the existing design and qualification testing clauses, form the complete “design — manufacture — marking — warning — use” safety chain. Core requirements: no functional damage at rated capacity, stability on hard level ground, functioning rollers, reliable adjustable-mechanism locking, complete product marking, and complete warning labels.
| Category | Key Requirement | Corresponding Clause |
|---|---|---|
| Structural strength | No functional damage at rated capacity | Design clauses + proof load test |
| Stability | No tipping on hard level surface | Design clauses + use check |
| Product marking | Permanent marks: maker, rated capacity | 4.2 / 4.3 / 4.4 (revised) |
| Warnings | Complete high-risk behavior warnings | 7.1.3(c)(d), 7.1.4 (revised) |
| Operation & maintenance | Correct loading, locking, periodic inspection | Section 7 requirements |
4. Engineering Practice Essentials 🛠️
- 🔍 Marking check: verify equipment marking completeness per revised 4.2–4.4, ensuring rated capacity and other information are legible.
- 🔧 Warnings in practice: fold the revised warning content into site briefings and work instructions, covering overload, off-center load, ground conditions, and locking.
- 📋 Version management: keep “PALD 11-1986 + 11a + 11b + 11c” as one complete set in the technical library.
- 📊 Site compliance: wheel dollies only support and move wheel components — never substitute for support stands or carry whole-vehicle loads.
💡 As the final addenda, 11c completes the 1986 edition revision cycle. Users should then watch for the next edition and switch when it is published.
5. Frequently Asked Questions ❓
❓ Q: What does PALD 11c-1989 revise?
A: The introduction’s first paragraph, Section 1, Section 2, product marking clauses 4.2–4.4, and warning clauses 7.1.3(c)(d) and 7.1.4.
A: The introduction’s first paragraph, Section 1, Section 2, product marking clauses 4.2–4.4, and warning clauses 7.1.3(c)(d) and 7.1.4.
❓ Q: Why is Addenda (c) called the final addenda?
A: The Standard was issued with an automatic addenda subscription; the 1986 edition received three addenda (a), (b), and (c), with (c) being the last — closing that edition’s revision cycle.
A: The Standard was issued with an automatic addenda subscription; the 1986 edition received three addenda (a), (b), and (c), with (c) being the last — closing that edition’s revision cycle.
❓ Q: How should site personnel apply the revised marking clauses?
A: Check the manufacturer’s mark, rated capacity marking, and warning information per revised 4.2–4.4; ensure they are complete, legible, and traceable, and record them in the equipment register.
A: Check the manufacturer’s mark, rated capacity marking, and warning information per revised 4.2–4.4; ensure they are complete, legible, and traceable, and record them in the equipment register.
❓ Q: Which hazards do the revised warning clauses emphasize?
A: Overload, off-center load, use on inclined or soft ground, and unlocked adjustable mechanisms. Site briefings should cover these high-risk situations item by item per the revised text.
A: Overload, off-center load, use on inclined or soft ground, and unlocked adjustable mechanisms. Site briefings should cover these high-risk situations item by item per the revised text.
