Discovery MR750 3.0T System Service Methods
5690009-2EN Revision 4
Object ID: 00000018WIA30A51E20GYZ
Topic ID: id_13105856 Version: 3.0
Date: Aug 29, 2019 1:39:23 AM

Hoist Service Kit and Lifting Accessories

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	Not Applicable	Not Applicable

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Main Lifting Beam (System Component)	1	-	-	-
Support Tube (System Component)	1	-	-	-
Service Platform (System Component)	1	-	-	-
Hoist Service Kit (Service Tool)	1	-	5196226	-
Non-Magnetic Tool Kit (or equivalent)	1	-	5113258	-

Table 3. Safety

Warning

possible personal injury or equipment damage!

the module could fall when using the lift tool.

before putting weight on the hoist chain, be sure that the links are aligned properly. this will help keep the chain from binding up, or becoming kinked, which is nearly impossible to correct when the chain is under tension.

CAUTION

Lockout/Tagout Required

Perform the proper Lockout/Tagout (LOTO) procedure for the type of replacement being performed.

The cabinet should not have any power while assembling and using the hoist kit.

About this task

The hoist service kit and lifting accessories assist in the removal and replacement of Equipment Room FRUs that weigh 36 to 345 pounds (16.3 to 156.5 kg). The hoist consists of a service tool and system components. The winch with chains and spreader bar for lifting the replacement FRUs are in the hoist service kit. The support tube (located in the HEC) and main lifting beam (located in the PGR Cabinet) are system components.

This document reviews the fundamentals of the hoist, discussing proper set up of the hoist service kit and lifting accessories for use in specific replacement procedures.

Figure 1. Hoist Kit and Lifting Accessories

Procedure

In the HEC, remove the support tube. The support tube is located on the right hand side of the cabinet and is secured with two mounting bolts.

There are seven openings in the support tube to be used in multiple configurations.

Figure 2. Support Tube - Openings Labels
Note:
To place the support tube correctly onto the cabinet, follow the proper orientation outlined in .

Place the support tube on top of cabinet in which an item is being replaced, and secure the support tube using a wrench to tighten the two bolts onto the top of the cabinet.

Figure 3. Example: Support Tube in Position for RF Amplifier Removal
Remove the main lifting beam from the PGR cabinet. (The main lifting beam is located on the right side of the PGR cabinet and is secured with Velcro straps.)

To take out the main lifting beam, you must unscrew and remove the connector from J9 on the Z-axis XPS unit.
The main lifting beam slides onto the top of the cabinet. Cables or hoses may have to be moved out of the way, but none need to be disconnected, especially for the PEN cabinet. There is a rear bracket for each position. The main lifting beam hook plate slides into the rear bracket (shown in Figure 4). Check to ensure that the rear bracket is tight and secure.

Note: The bracket lines up with the support tube's orientation as detailed in . If the bracket is not aligned properly to receive the main lifting beam, then the support tube orientation setup is incorrect for the cabinet.

Figure 4. Cabinet Rear Bracket
For the PGR cabinet, remove the gradient cable cover by unscrewing two screws on each side (shown in Figure 5), then remove the needed beam slot cover by unscrewing the one thumbscrew (shown in Figure 6).

Figure 5. Gradient Cable Cover

Figure 6. Beam Slot Cover Thumbscrew
Slide the winch into the main lifting beam, and secure the winch in with the pin so it does not slide out. (The winch is able to slide within the main lifting beam to allow proper alignment with the removed item or FRU lifting bracket.)

Figure 7. Hoist Kit Assembled

Finalization

Remove the winch by removing the pin from the main lifting beam and sliding out the winch; place the winch (including hook and chains) into the hoist service kit box.
Remove the main lifting beam, and return it to the PGR cabinet.
1. Insert the hook end of the beam into the cabinet edge first, then place the bottom part of the beam in.
2. Secure it into the cabinet with the Velcro straps and pin at the lower end of the beam.
3. After the main lifting beam is inserted in the cabinet, plug in the XPS J9 connector on the Z-axis.
Unscrew the support tube from the top of the cabinet, return it to the HEC, and secure it with the two bolts.