---
kind: "section"
citation: "29 C.F.R. § 1926.305"
title: "29"
number: "1926.305"
heading: "Jacks—lever and ratchet, screw, and hydraulic."
url: "https://uscodex.org/cfr/29/1926.305"
---

# §1926.305. Jacks—lever and ratchet, screw, and hydraulic.

- (a) **General requirements.**
  - (1) The manufacturer's rated capacity shall be legibly marked on all jacks and shall not be exceeded.
  - (2) All jacks shall have a positive stop to prevent overtravel.
- (b) [Reserved]
- (c) **Blocking.** When it is necessary to provide a firm foundation, the base of the jack shall be blocked or cribbed. Where there is a possibility of slippage of the metal cap of the jack, a wood block shall be placed between the cap and the load.
- (d)
  - (1) **Operation and maintenance.**
    - (i) After the load has been raised, it shall be cribbed, blocked, or otherwise secured at once.
    - (ii) Hydraulic jacks exposed to freezing temperatures shall be supplied with an adequate antifreeze liquid.
    - (iii) All jacks shall be properly lubricated at regular intervals.
    - (iv) Each jack shall be thoroughly inspected at times which depend upon the service conditions. Inspections shall be not less frequent than the following:

      (a) For constant or intermittent use at one locality, once every 6 months,

      (b) For jacks sent out of shop for special work, when sent out and when returned,

      (c) For a jack subjected to abnormal load or shock, immediately before and immediately thereafter.

    - (v) Repair or replacement parts shall be examined for possible defects.
    - (vi) Jacks which are out of order shall be tagged accordingly, and shall not be used until repairs are made.

## Notes

### Amendments

[44 FR 8577, Feb. 9, 1979; 44 FR 20940, Apr. 6, 1979, as amended at 55 FR 42328, Oct. 18, 1990; 58 FR 35176, June 30, 1993]

### Authority

Authority: Sections 4, 6, and 8 of the Occupational Safety and Health Act of 1970 (29 U.S.C. 653, 655, 657); Secretary of Labor's Order No. 12-71 (36 FR 8754), 8-76 (41 FR 25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), or 5-2002 (67 FR 65008), as applicable; and 29 CFR part 1911. Section 1926.307 also issued under 5 U.S.C. 553.

### Authority

Authority: 40 U.S.C. 3704; 29 U.S.C. 653, 655, and 657; and Secretary of Labor's Order No. 12-71 (36 FR 8754), 8-76 (41 FR 25059), 9-83 (48 FR 35736), 1-90 (55 FR 9033), 6-96 (62 FR 111), 3-2000 (65 FR 50017), 5-2002 (67 FR 65008), 5-2007 (72 FR 31159), 4-2010 (75 FR 55355), 1-2012 (77 FR 3912), or 8-2020 (85 FR 58393), as applicable; and 29 CFR part 1911, unless otherwise noted Sections 1926.58, 1926.59, 1926.60, and 1926.65 also issued under 5 U.S.C. 553 and 29 CFR part 1911. Section 1926.61 also issued under 49 U.S.C. 1801-1819 and 5 U.S.C. 553. Section 1926.62 also issued under sec. 1031, Public Law 102-550, 106 Stat. 3672 (42 U.S.C. 4853). Section 1926.65 also issued under sec. 126, Public Law 99-499, 100 Stat. 1614 (reprinted at 29 U.S.C.A. 655 Note) and 5 U.S.C. 553.

### Source

Source: 44 FR 8577, Feb. 9, 1979; 44 FR 20940, Apr. 6, 1979, unless otherwise noted.

### Amendments

[44 FR 8577, Feb. 9, 1979; 44 FR 20940, Apr. 6, 1979, as amended at 55 FR 42328, Oct. 18, 1990; 58 FR 35176, June 30, 1993]