Введение
This guide will show you how to remove and replace the unloader assembly for the Mi-T-M gas pressure washer. You will need to disconnect many tight pipe fittings in order to disconnect the unloader.
You will need something that is 3” tall to place underneath the pump assembly. This can be a wooden block, brick, etc. This will help brace the pump while you work on removing the fittings.
The following tools are optional, but can help with disassembly:
- 1/4” socket
- 1/2” wrench
- 11/16” wrench
- 3/4” wrench
- 15/16” wrench
- 1” wrench
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There are two versions of the unloader assembly:
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First image—earlier pressure washers feature an all-in-one assembly (part 8-0631) that’s easy to replace, but gave users the ability to break the pump.
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Second image—later models use a tamper-proof, harder to remove unloader (part 8-0656), connected by a series of pipe fittings.
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If you need to remove an all-in-one style unloader, use a large adjustable wrench to unscrew the two large Banjo bolts. This will disconnect the unloader from the pump assembly.
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Grab the plastic housing at the end of the spark plug wire.
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Pull firmly to disconnect the wire from the spark plug.
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Use a 1/4" socket or a large flathead screwdriver to loosen the hose clamp near the inlet filter.
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Slide the hose clamp away from the end of the hose.
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Slide a 3" tall block underneath the pump assembly to help support the pump.
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Use a 1/2" or adjustable wrench to loosen and twist the return elbow half a turn, so that it faces the opposite direction.
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Use a large adjustable wrench to loosen and unscrew the filter.
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Use a 1" or large adjustable wrench to loosen and unscrew the pump input elbow.
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Use a 3/4" or adjustable wrench to loosen and disconnect the coupling from the pump assembly.
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Hold the outlet fitting in place with a 15/16" or large adjustable wrench.
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Use a 3/4" or adjustable wrench to loosen and unscrew the output elbow from the outlet fitting.
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Use a 3/4" or adjustable wrench to loosen and unscrew the coupling nipple from the unloader.
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Use a 11/16" or adjustable wrench to loosen and unscrew the return hose nipple from the unloader.
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Only the unloader assembly remains.
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Compare the original unloader with the replacement part. The replacement part may have a plug installed in the wrong port.
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Use an 8 mm (5/16" OK) hex key to remove and re-install the plug into the correct port.
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To reassemble your device, follow these instructions in reverse order.
When you re-connect the fittings, clean off the old thread sealant and apply new thread sealant (tape or pipe dope).
To reassemble your device, follow these instructions in reverse order.
When you re-connect the fittings, clean off the old thread sealant and apply new thread sealant (tape or pipe dope).
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