Technical Information · issue 28 of 1994
Replacement pumps; Pump pistons; Service instructi
IssueTI 28/1994
Full text
Page 1 of 4
Technical Information
28.94
Engineering changes in STIHL high-pressure cleaners RE 101 K - Type 4721
RE 102 K - Type 4719
RE 104 K - Type 4719
RE 106 K - Type 4719
Summary
1. Replacement pumps (new replacement parts)
2. Pump pistons (material modified)
3. Service instructions (supplement to repair manual)
3.1 Rotary shaft seal removal
3.2 Electric motor removal
1. Replacement pumps
Replacement pumps are available to make
servicing easier. The pumps differ in the angle of
the swash plates. The respective angle is battered
into the edge of the swash plates.
Note
After installing the pumps, check the oil level and
fill, if necessary, with one of the following oil grades:
ESSO Invarol EP 46
AGIP Arnica EP 46
Replacement pump RE 101 K
SHELL Tellus T 46
ARAL Vitam HF 46
BP Energol SHF 46
Replacement pump RE 102 K, RE 104 K, RE 106 K Page 2 of 4
Technical Information 28.94 - Page 2
14 2
13 3
12 4
11 5
7 6
8
15
10
Pump RE 101 K
32,33,34,35,36
22
23
25
30
29 24
26
28 27
17
20
21
19
Pump RE 102 K, RE 104 K and RE 106 K Page 3 of 4
Technical Information 28.94 - Page 3
Designation Original New Item Rem. MAM
version version
RE 101 K
Pump containing items 1 to 15: --- 4721 701 5600
Rotor 4721 600 1100 4721 600 1100 1
Drive housing 4721 701 1100 4721 701 1100 2
Sealing ring 15x24x5 4721 709 2000 4721 709 2000 3
Ball bearing 6302Z-C3 9503 003 8220 9503 003 8220 4
Swash plate 10° 4719 701 3000 4719 701 3000 5
Needle bearing AXK 4060 9514 003 6953 9514 003 6953 6
Sealing ring 80.6x2.62 9645 945 8588 9645 945 8588 7
Pump housing 4721 701 0500 4721 701 0500 8
Screw plug 4719 700 2300 4719 700 2300 9
Sealing ring 11x2 9645 945 7524 9645 945 7524 10
Piston 4721 701 3100 4721 701 3100 11
Spring 4719 708 3300 4719 708 3300 12
Clamping plate 4719 708 3600 4719 708 3600 13
Circlip 12x1 9455 621 1130 9455 621 1130 14
Sealing ring 4721 709 2005 4721 709 2005 15
RE 102/104/106 K
Pump 230 V/50 Hz; --- 4719 700 5600 1)
containing items 16 to 32:
Pump 230 V/50 Hz; ---
fo 4719 700 5605 2)
containing items 16 to 31 and 33:
Pump 230 V/50 Hz; --- 4719 700 5610 3)
containing items 16 to 31 and 34:
Pump 100 V/60 Hz; --- 4719 700 5615 4)
containing items16 to 31 and 35:
Pump 100 V/50 Hz; --- 4719 700 5620
containing items 16 to 31 and 36:
Rotor 200 V ... 250 V 4719 600 1110 4719 600 1110 16
Rotor 100 V ... 120 V 4719 600 1111 4719 600 1111 16
Gasket 4719 609 0100 4719 609 0100 17
Oil sight glass 4719 700 5900 4719 700 5900 18
Drive housing 4719 760 1400 4719 760 1400 19
Oil seal B 17x28x7 9630 003 1745 9630 003 1745 20
Roller bearing 30303 9509 003 6548 9509 003 6548 21
Needle bearing AXK 4060 9514 003 6953 9514 003 6953 22
Sealing ring 80.6x2.62 9645 945 8588 9645 945 8588 23
Sealing ring 11.11x1.78 9645 945 7524 9645 945 7524 24
Screw plug; containing item 24: 4719 700 2300 4719 700 2300 25
Screw plug 1/4" 9146 794 7880 9146 794 7880 26
Pump housing 4719 701 0500 4719 701 0500 27
Piston 4719 701 3100 4719 701 3100 28
Spring 4719 708 3300 4719 708 3300 29
Clamping plate 4719 708 3600 4719 708 3600 30
Sealing ring 4719 709 2005 4719 709 2005 31
Swash plate 10° 4719 701 3000 4719 701 3000 32 1)
Swash plate 9° 4719 701 3010 4719 701 3010 33 2)
Swash plate 7°30’ 4719 701 3020 4719 701 3020 34 3)
Swash plate 11°30’,J 60 Hz 4719 701 3005 4719 701 3005 35 4)
Swash plate 12°,J 50 Hz 4719 701 3025 4719 701 3025 36
Remarks
1) RE 102 K
2) RE 104 K
3) RE 106 K
4) RE 102 K USA/CDN Page 4 of 4
Technical Information 28.94 - Page 4
2. Pump pistons
For some time now, we have been using pistons
made of a modified material. The new pistons
differ from the old ones in that the new pistons
have an additional groove (1).
1
3. Service instructions
left: previous versions
In addition to the descriptions in the repair manual, right: new versions
observe the following instructions:
3.1 Rotary shaft seal removal
Page 21, chapter 7.5
Before prying defective rotary shaft seals out of
their seats in the pump casing:
● carefully clamp the pump casing in a vice
(use protective jaws - casing is made of
aluminum).
3.2 Electric motor removal
Page 25, chapter 8.1:
● Using two screwdrivers placed across from
one another, carefully pry the drive casing off
of the stator casing. Take care not to jam the
drive casing or damage the casing.
Last TI about the series
RE 101 K: 26.93
RE 102/104/106 K 34.92
49.91
Waiblingen, 20 July 1994 Andreas Stihl
D1/MTK-st Technical Documentation Extracted from the manufacturer's 2012 service catalogue. Most of these PDFs embed fonts with a shifted character map, so the text above was recovered rather than copied — read it as a faithful but imperfect transcription, and treat the page image above each block as the authority where the two disagree — the figures exist only there, because they are vector drawings that text extraction cannot keep.