Karcher Pressure Washers 11073080 2017 Pump Rebuild Repair Guide

Difficulty

Moderate

Steps

Time Required

                          20 minutes - 1 hour

Sections

Karcher Pressure Washers 11073080 2017 Pump Rebuild
20 steps

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BackKarcher Pressure Washers 1.107-308.0 (2017)
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Introduction

This guide may include more disassembly than is needed. Check which parts are included in your rebuild kit and only remove the parts that you can replace.

What you need

Step 1

              Karcher Pressure Washers 11073080 2017 Pump Rebuild

Before you begin, be sure that the engine is powered off and is cool to the touch.
Grab the plastic housing at the end of the spark plug wire.
Pull firmly to disconnect the wire from the spark plug.

Before you begin, be sure that the engine is powered off and is cool to the touch.

Grab the plastic housing at the end of the spark plug wire.

Pull firmly to disconnect the wire from the spark plug.

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Step 2

              Replace the manifold cap seals and check valves

Use a 24 mm socket to remove one of the manifold cap bolts on the pump manifold.
These bolts are easy to strip—be careful during removal.
Some of these bolts may be seized and could require a breaker bar to assist in removal.
During reassembly, tighten the manifold cap bolts to 90 Nm (65 ft-lbs).

Use a 24 mm socket to remove one of the manifold cap bolts on the pump manifold.

These bolts are easy to strip—be careful during removal.

Some of these bolts may be seized and could require a breaker bar to assist in removal.

During reassembly, tighten the manifold cap bolts to 90 Nm (65 ft-lbs).

Step 3

Use a pair of needle-nose pliers to pull the check valves straight out of the pump manifold.
During reassembly, this can be replaced if your rebuild kit includes a new one.

Use a pair of needle-nose pliers to pull the check valves straight out of the pump manifold.

During reassembly, this can be replaced if your rebuild kit includes a new one.

Step 4

Use an angled pick or tweezers to pull out and remove the O-ring inside the pump manifold.
During reassembly, this can be replaced if your rebuild kit includes a new one.

Use an angled pick or tweezers to pull out and remove the O-ring inside the pump manifold.

Step 5

Use a pick or tweezers to slide the O-ring off of the manifold cap bolt.
During reassembly, this can be replaced if your rebuild kit includes a new one.
Repeat the last four steps for each of the manifold cap bolts to replace the rest of the check valves and O-rings.
Reassemble the manifold cap bolts before continuing to the next step.

Use a pick or tweezers to slide the O-ring off of the manifold cap bolt.

Repeat the last four steps for each of the manifold cap bolts to replace the rest of the check valves and O-rings.

Reassemble the manifold cap bolts before continuing to the next step.

Step 6

              Remove the manifold

Use a 12 mm hex key to remove the two manifold stud bolts.
During reassembly, tighten the manifold stud bolts to 90 Nm (65 ft-lbs).
During reassembly, these can be replaced if your rebuild kit includes new ones.
During reassembly, replace the lock washers on the stud bolts with new lock washers.

Use a 12 mm hex key to remove the two manifold stud bolts.

During reassembly, tighten the manifold stud bolts to 90 Nm (65 ft-lbs).

During reassembly, these can be replaced if your rebuild kit includes new ones.

During reassembly, replace the lock washers on the stud bolts with new lock washers.

Step 7

Remove the pump manifold.

Remove the pump manifold.

Step 8

              Replace the manifold seals

Use a pick or tweezers to pry out and remove the high pressure seal.
During reassembly, this can be replaced if your rebuild kit includes a new one.

Use a pick or tweezers to pry out and remove the high pressure seal.

Step 9

Use a pick to pry out and remove the inner high pressure seal.
During reassembly, this can be replaced if your rebuild kit includes a new one.

Use a pick to pry out and remove the inner high pressure seal.

Step 10

The inner high pressure seals come in two pieces. You may need to separate the pieces if your rebuild kit doesn’t come with both.
Repeat the last three steps for the other two cylinders to replace the remaining seals.

The inner high pressure seals come in two pieces. You may need to separate the pieces if your rebuild kit doesn’t come with both.

Repeat the last three steps for the other two cylinders to replace the remaining seals.

Step 11

              Replace the manifold O-ring

Use a pick or tweezers to lift the manifold O-ring out of its groove in the crankcase.
During reassembly, this can be replaced if your rebuild kit includes a new one.
During reassembly, reapply grease to the manifold O-ring groove.

Use a pick or tweezers to lift the manifold O-ring out of its groove in the crankcase.

During reassembly, reapply grease to the manifold O-ring groove.

Step 12

              Replace the pump pressure rings and seals

Use a pick or flathead screwdriver to gently pry the pressure ring out of the crankcase.
If you use a pick, there are two small holes on either side of the pressure ring that a pick can fit into to aid with prying.
Be very careful not to mar the crankcase. It may be necessary to put a cloth or other padding between your tool and the crankcase while prying.

Use a pick or flathead screwdriver to gently pry the pressure ring out of the crankcase.

If you use a pick, there are two small holes on either side of the pressure ring that a pick can fit into to aid with prying.

Be very careful not to mar the crankcase. It may be necessary to put a cloth or other padding between your tool and the crankcase while prying.

Step 13

Use a pick or tweezers to slide the O-ring off of the pressure ring.
During reassembly, the O-ring can be replaced if your rebuild kit includes a new one.

Use a pick or tweezers to slide the O-ring off of the pressure ring.

During reassembly, the O-ring can be replaced if your rebuild kit includes a new one.

Step 14

Use a pick to pry out and remove the low pressure seal from inside the pressure ring.
During reassembly, this can be replaced if your rebuild kit includes a new one.

Use a pick to pry out and remove the low pressure seal from inside the pressure ring.

Step 15

The low pressure seals come in two pieces. You may need to separate the pieces if your rebuild kit doesn’t come with both.

The low pressure seals come in two pieces. You may need to separate the pieces if your rebuild kit doesn’t come with both.

Step 16

              Replace the plungers

Use a pick or tweezers to pry out and remove the smaller washer sitting around the piston.

Use a pick or tweezers to pry out and remove the smaller washer sitting around the piston.

Step 17

Use an angled pick or tweezers to pull out the larger washer sitting around the piston.
There are two small holes in this washer that can aid in removal.

Use an angled pick or tweezers to pull out the larger washer sitting around the piston.

There are two small holes in this washer that can aid in removal.

Step 18

Use a 10 mm socket to remove the plunger bolt.
During reassembly, the plunger and bolt can be replaced if your rebuild kit includes new ones.
During reassembly, tighten the manifold stud bolts to 13 Nm (9 ft-lbs).

Use a 10 mm socket to remove the plunger bolt.

During reassembly, the plunger and bolt can be replaced if your rebuild kit includes new ones.

During reassembly, tighten the manifold stud bolts to 13 Nm (9 ft-lbs).

Step 19

Your rebuild kit may not include the plunger bolt. If not, pull the bolt and the washer out of the plunger and transfer them to the new plunger.

Your rebuild kit may not include the plunger bolt. If not, pull the bolt and the washer out of the plunger and transfer them to the new plunger.

Step 20

              Remove the inner-most washer

Use an angled pick or tweezers to remove the inner-most washer.
During reassembly, this can be replaced if your rebuild kit includes a new one.
During reassembly, apply grease to the plungers.
Repeat the previous nine steps for the other two cylinders to replace the remaining seals, washers, and plungers.

Use an angled pick or tweezers to remove the inner-most washer.

During reassembly, apply grease to the plungers.

Repeat the previous nine steps for the other two cylinders to replace the remaining seals, washers, and plungers.

To reassemble your device, follow these instructions in reverse order.

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                    Adam O'Camb

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Introduction#

What you need#

Introduction

What you need