850S4 (Type 0) Bostitch Nailer - Overview

Sections of the 850S4

[Viewing 1 of 1]
Keep searches simple, eg. "belt" or "pump".
Kit,Trigger Valve-Speed – Part Number: STV2
Kit,Trigger Valve-Speed
PartSelect #: PS10250785
Manufacturer #: STV2
  No Longer Available
Cap,Magazine End – Part Number: 103786
Cap,Magazine End
PartSelect #: PS10245681
Manufacturer #: 103786
  No Longer Available
Nut,Hfn,M8X1.25 – Part Number: 103859
Nut,Hfn,M8X1.25
PartSelect #: PS10245712
Manufacturer #: 103859
  No Longer Available
Cylinder – Part Number: 104606
Cylinder
PartSelect #: PS10245789
Manufacturer #: 104606
  No Longer Available
Spring,Latch Lever – Part Number: 105786
Spring,Latch Lever
PartSelect #: PS10245857
Manufacturer #: 105786
  No Longer Available
Label, Trip Adj. – Part Number: 851934
Label, Trip Adj.
PartSelect #: PS10247438
Manufacturer #: 851934
  No Longer Available
Bumper-Bottom – Part Number: 107000
Bumper-Bottom
PartSelect #: PS10245944
Manufacturer #: 107000
  No Longer Available
Spring,C.T.,Inner – Part Number: 107310
Spring,C.T.,Inner
PartSelect #: PS10245975
Manufacturer #: 107310
  No Longer Available
Seal,Cap – Part Number: 103802
Seal,Cap
PartSelect #: PS10245688
Manufacturer #: 103802
  No Longer Available
Pusher,S4 – Part Number: 103845
Pusher,S4
PartSelect #: PS10245707
Manufacturer #: 103845
  No Longer Available
Spring,Torsion – Part Number: 103839
Spring,Torsion
PartSelect #: PS10245705
Manufacturer #: 103839
  No Longer Available
Pin,Latch – Part Number: 105780
Pin,Latch
PartSelect #: PS10245854
Manufacturer #: 105780
  No Longer Available
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
would not fire nails
remove 2 Philips head screws, drive out drift pins with drill bit. Remove TVA6 replace with new TVA6 making sure TVA6 is completely seated and slots are aligned with drift pin holes! Drive in drift pins. Replace trigger and screws.
This did not solve the problem as suggested by Parts select.
Replaced Head Valve Seal...Problem resolved
Parts Used:
KIT-TRIGGER VALVE
  • Richard from Bogalusa, LA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
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