Crosby L-562A ROV Hooks Instruction Manual

: June 3, 2024
: Crosby

Table of Contents

ROV
Crosby® ROV HOOKS

ROV

SECTION 8

APPLICATIONS & WARNINGS

Crosby® ROV HOOKS

WARNINGS & APPLICATION INSTRUCTIONS

L-562A L-320R

WARNING

Loads may disengage from hook if proper procedures are not followed.
A falling load may cause serious injury or death.
Hook must always support the load. The load must never be supported by the latch.
Read and understand these instructions before using hook and latch.

QUIC-CHECK® Hoist hooks incorporate markings forged into the product which address two (2) QUIC-CHECK® features:

Deformation Indicators - Two strategically placed marks, one just below the shank or eye and the other on the hook tip, which allows for a QUIC- CHECK® measurement to determine if the throat opening has changed, thus indicating abuse or overload.

To check, use a measuring device (i.e., tape measure) to measure the distance between the marks. The marks should align to either an inch or half- inch increment on the measuring device. If the measurement does not meet criteria, the hook should be inspected further for possible damage.

Angle Indicators – Indicates the maximum included angle which is allowed between two (2) sling legs in the hook. These indicators also provide the opportunity to approximate other included angles between two sling legs.

IMPORTANT SAFETY INFORMATION – READ & FOLLOW

A visual periodic inspection for cracks, nicks, wear, gouges and deformation as part of a comprehensive documented inspection program, should be conducted by trained personnel in compliance with the schedule in ASME B30.10 and/or regulations governing your industry or jurisdiction.
For ROV hooks used in frequent load cycles or pulsating loads, the ROV hook components (hoist hook, eye bolt and hexagon body) and their threads should be periodically inspected by Magnetic Particle or Dye Penetrant (Disassembly will be required).
Disassemble the eye bolt and shank hook from hexagon body (sizes up to and including 31.5t WLL). This requires removing the 2 spiral pins and unscrewing the eye bolt and hoist hook.
Always use new spiral pins when re-assembling the ROV Hook.
After reassembly, Crosby recommends a proof test equal to 2 times the ROV hook’s stated WLL.
Never use a hoist hook whose throat opening has been increased, or whose tip has been bent more than 10 degrees out of plane from the hook body, or is in any other way distorted or bent. Note: A latch will not work properly on a hook with a bent or worn tip.
Never use a hoist hook that is worn beyond the limits shown in Figure 1.
Remove from service any hoist hook with a crack, nick or gouge. Hoist hooks with a nick or gouge shall be repaired by grinding lengthwise, following the contour of the hook, provided that the reduced dimension is within the limits shown in Figure 1. Contact Crosby Engineering to evaluate any cracks.

Figure 1

Crosby L-562A ROV Hooks fig 1

ZONE A: REPAIR NOT REQUIRED
ZONE B: 10% OF ORIGINAL DIMENSIONS
ZONE C: 5% OF ORIGINAL DIMENSIONS
ZONE D: 5% OF ORIGINAL DIMENSIONS

Never repair, alter, rework, or reshape an ROV hook by welding, heating, burning, or bending.
Remove from service a hoist hook or eye bolt which has threads corroded more than 20% of the hexagon body engagement length.
Never side load, back load, or tip load the hoist hook, eye bolt or hexagon body. (Side loading, back loading and tip loading are conditions that damage and reduce the capacity of the ROV hook.) (See Figure 2)
The use of a latch may be mandatory by regulations or safety codes. Follow the regulations governing your industry or jurisdiction.

Figure 2

i.e., Backhoe Bucket

SIDE LOAD WRONG SIDE LOAD WRONG

BACK LOAD WRONG TIP LOAD WRONG

Always make sure the hook supports the load. The latch must never support the load.
When multileg slings are placed in the base (bowl/saddle) of the hook, the maximum included angle between sling legs shall be 90 deg. The maximum sling leg angle with respect to the hook centerline for any rigging arrangement shall be 45 degrees. A collector ring, such as a link or shackle, should be used to maintain in-line load when more than two legs are placed in a hook or for angles greater than 45 degrees with respect to hook centerline. When more than two legs are placed in the hook bunching of the legs shall be avoided.
See ASME B30.10 “Hooks” for additional information.
Remove from service any eye bolt with a crack, nick or gouge. Eye bolt with a nick or gouge shall be repaired by grinding lengthwise, following the contour of the eye bolt, provided that the reduced dimension is no greater than 5% of original dimension. Contact Crosby Engineering to evaluate any cracks.

This application/warning information apply to Crosby products only.