Gasboy Atlas Start-up - Manual (Page 127)

MDE-4334D Atlas™ Start-up and Service Manual · July 2013 Page 6-7
General Service Procedures Hydraulic/Mechanical Components
Servicing Seals, O-rings, and Gaskets
When opening or disassembling hydraulic components that have been in service for more than
two years, replace all of the disturbed seals. Failure to replace the degenerated or old seals
could result in leaks.
Note: Universal Seal Kit (M05559K001) contains proportional quantities of material types
commonly replaced during service. Use of this kit is recommended.
To service seals, O-rings, and gaskets, proceed as follows:
1 Inspect the seals for excessive swelling, hardening, softening, and other degradation.
2 Clean and inspect sealing surfaces before replacing or installing seals, O-rings, or gaskets.
Note: Always use Atlas-approved O-rings and gaskets.
3 Replace the parts, as required.
4 Use a small amount of silicone grease to retain O-ring seals in position during assembly and to
improve durability of dynamic seals. Ensure that the seal remains in position and does not drop
out of its location in case of a blind assembly (seal cannot be seen easily).
Pipes and Hydraulic Plumbing
Follow these procedures when you work on piping:
• Use UL-approved pipe sealants suitable for the fuel involved for pipe threads. Follow the
sealant manufacturer’s recommendations for use. Avoid any sealants that may become
hard over time.
• Always clean and inspect pipe threads before applying the sealant. Do not apply sealant to
dirty, oily, or wet threads. Do not apply sealant to the first two threads.
• Do not tighten or disturb joints during or after the sealant has set.
• Do not use Teflon tape. Teflon tape fragments may cause unit failure.
• Do not excessively tighten any component during installation or assembly. Excessive
tightening may cause damage to the part.
• Torque fittings to the correct pounds. Refer to “Torque Specifications” on page 6-8 .
• Always check for leaks after service.
Service Hints
Follow these hints for servicing the pump and hydraulic plumbing:
• Slow or no flow can be due to several causes. A less common issue that can happen at
times is that the flow path through the plumbing can be completely or partially plugged. If
more common issues such as valves, filters, strainers, meters have been found to be OK,
check for plumbing obstructions.
• Always use sealants suitable for the fuel involved. Some fuels, especially diesel, may
wash away general purpose sealants.