Technical Information · issue 42 of 2005
Gear
IssueTI 42/2005
Full text
Page 1 of 2
STIH)
Technical Information 42.2005
KombiTool STIHL STIHL HT-KM – Series 4138, 4182
Attachment tool STIHL HT – Series 4138, 4182
Gear
The gear head 4138 640 0120 of the KombiTool The new gear head (1) 4182 640 0103 with friction
HT-KM and attachment tool HT is replaced by the clutch (2) on the sprocket (3) reduces the level of
new gear head 4182 640 0103 with friction clutch vibrations produced by the cutting attachment
and different transmission gear ratio. during operation of the machine. This reduces the
load on the drive shaft.
Friction clutch
The same friction clutch is used as on the HT 75 and
HT 101.
1
Mechanical design
- Sprocket (3)
390TI003 KN
- Collar screw (4)
3 2
- Cup springs of the friction clutch (5)
- Washers (6)
TI_42_2005_30_01_01.fm englisch / English USA
)m~ge 2 Technical Information 42.2005
Service notes Transmission gear ratio 1:1
The collar screw (4) for centering the cup springs The transmission gear ratio has been reduced from
has a left-hand thread. Install the collar screw (4) 1:1.27 to 1:1 and results in a higher chain speed.
with Loctite 272, tightening torque 8 Nm.
The cup springs (5) for the friction clutch must
always be replaced together (set of 3).
The sprocket (3) must be replaced together with the
washers (6). The sprocket is only available for
replacement together with the washers.
The legend "0103" is marked underneath the
gearbox to permit visual differentiation of the new
gear head 4182 640 0103 with transmission ratio
1:1.
Spare parts
The set of 1:1 pinion gears 4182 640 7300 is
available for the new gear head.
Other replacement parts for the gear head
4182 640 0103 are listed in the spare parts
documentation.
Summary
Item Part name Previous New Remarks
1 Gear head, transmission ratio 1:1.27 4138 640 0120 --- 1)
2 Gear head, transmission ratio 1:1; --- 4182 640 0103
including Item 3
3 Set of pinion gears 1:1 --- 4182 640 7300
Modification to be introduced continuously
Remark
1) Previous version of part remains available
Last Technical Information on the STIHL HT, HT-KM: 38.2002
© ANDREAS STIHL AG & Co. KG, 2005 Technical Documentation
D1/MTK-ja
TI_42_2005_30_01_01.fm Page 2 of 2
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.