Greenlee 1990 - Tools and Supplies; Pressure Check Procedure

Greenlee Textron / Subsidiary of Textron Inc.
5
1990 Dieless Hydraulic Crimping Tool
Tools and Supplies
Before beginning any repair procedure in this manual,
read the entire section to be sure all of the necessary
tools and supplies are available.
Tools and supplies for most procedures include:
• Bench vise with jaw protectors to secure the tool
• Quality pressure gauge with 1/2% accuracy and a
range of 0 to 700 Bar (0 to 10,000 psi)
• Gauge adapter:
Serial Code WH: 1/16" NPT male pipe adapter
Serial Code YM: 1/8" SAE straight thread adapter
(Greenlee 36246)
• 32 mm (1-1/4") diameter aluminum rod, at least
76 mm (3") long
• RTV (room-temperature vulcanizing) silicone rubber
adhesive/sealant, such as Dow Corning
®
Silastic
®
732
®
Multipurpose Sealant
• Pressure Test Kit (Greenlee 32891)
• Exxon Univis
®
J26 hydraulic oil
• Serial Code WH only: dry white lubricant
(silicone or talcum)
Tools and supplies for some specific procedures
include:
• C-clamp, arbor press, or other means of retaining the
ram spring when disassembling and assembling the
cylinder
• Spanner wrench for removing the pressure-adjusting
valve body from the pump block
Pressure Check Procedure
1. Clamp the tool head gently in a vise with the
handles upward. Fully retract the ram.
2. Remove the RTV (98) and port plug (97).
3. Install the pressure gauge with the gauge adapter
into the port that the plug (97) was removed from.
4. Pump the handle to fully extend the ram. Note the
pressure required to open the relief valve (which
produces an audible click). The relief pressure
should be 90 to 103 Bar (1300 to 1500 psi).
5. Retract the ram and place the 32 mm (1-1/4")
diameter aluminum rod between the dies. Pump the
handle until the relief valve opens. Note the
pressure required to open the relief valve.
The relief pressure should be 566 to 675 Bar
(8200 to 9800 psi).
6. If the crimping tool’s relief pressure is:
• within the ranges stated in Step 4 or Step 5,
remove the gauge and adapter, replace the plug
(97) and reseal with RTV (98). Add hydraulic oil
(see Air Purging and Oil Filling Procedure).
• not within the ranges stated in Step 4 or Step 5,
proceed to the Pressure Adjustment Procedure.