Asahi Pentax 6x7 MLU and 67 full professional service by factory technicians

$296.55 Buy It Now or Best Offer
free,30-Day Returns

Seller Store asahipentax.mamiya.6×7
(346) 100%,

Location: London
Ships to: US,
Item: 176448333653

Return postage will be paid by:Buyer
Returns Accepted:Returns Accepted
After receiving the item, your buyer should cancel the purchase within:30 days
Pentax 6×7:Pentax 6×7
Series:Pentax 6×7 MLU and 67
Type:Medium Format
Format:Medium Format
Focus Type:Manual
Pentax 6×7 MLU and 67:Pentax 6×7 MLU and 67
Features:Service
Colour:Black

Asahi Pentax 6×7 MLU and 67 service of the body only includes: Each body is fully dismantled, checked and tested.Shutter is removed cleaned, lubricated with dry lubricant and resetFilm advance assembly is dismantled to service the clutchThe counter assembly is dismantled and reset The 1st and 2nd curtain release mechanism is reset to factory conditionThe slow shutter timer and fast shutter timer is reset to factory conditionAll light seals are replaced with closed cell foam Any minor issues are rectified as part of the service (excludes broken shutter, broken counter, broken clutch and broken frame spacing)For major issues, use the « Repair » listing For Pentax 6×7 non-MLU please see other Service listingThis listing is for Pentax 6×7 MLU and 67 The 21 point check includes1. Mirror movement2. Shutter speeds3. Shutter curtain travel is even across the frame 4. Frame count is 10 with 120 film5. Frame spacing is even across 10 frames 6. Film advance is smooth 7. Film advance locks after every cocking action8. Exposure coupling chain 9. Stop down lever10. Shutter dial11. Focus screen is set to infinity12. Flash synch13. Film roll locks14. Frame counter resets to zero when opening the Back 15. Battery terminals16. Battery chamber17. Slow and fast shutter timer18. Solenoid 19. Meter coupling contacts20. Screws and fasteners21. Leatherettes How it works:Make the purchase and choose « Free Collection » in checkoutEbay will send you a QR code. Keep this safeYou will be sent full address to post your item. For UK, use Royal Mail Special Delivery Next Day 1pm service which tracked signed and insuredFor overseas, use Fedex or DHL only The camera will be repaired and sent back within 7 days. You pay for the shipping. When you receive the camera, you confirm the QR code from ebay to complete the transaction Get in touch anytime. Contact is at the bottom of every listing PLEASE NOTEWe stock and manufacture all essential parts for every item we sell. You are assured that all your purchases will remain serviceable in the foreseeable future. We are registered as a business seller in the brand names we own. We acquired the trade marks « Asahi Pentax 6×7 », « Pentax 6×7 », « Pentax 67 » and « Asahi Optical Co » in 2020 We defeated Hoya and Ricoh. Fact check it with UK Trade Mark Office: Decision of 22 Sep 2022 We have also acquired and reinstated all of the OEM websites We give to you the service you would expect from a long established brand close to a 100 years old We have set up machining and fabrication operations in the UK to make all the essential parts We have invested effort, time and money to keep the legendary 6×7, 67 and 67ii in working condition and serviceable Please do not compare us private sellers on eBay peddling sub-standard unserviced equipment Please do not compare us to those masquerading as business sellers on ebay peddling junk, passing it off as « vintage » Please do not compare us to sellers from Japan with their « MINT +++++ but has haze, but does not work » descriptions Background of the 6×7 and 67 The Pentax 6×7 (later 67) is a SLR medium format system film camera for 120 and 220 film, which produces images on the film that are nominally 6x7cm in size (actual image on the film is 56 mm × 70 mm) The camera is completely battery dependent. Power is provided by a 6 volt PX28 (originally Mercury-specified 1968, and Silver Oxide 1971), but equal substitutes PX28S/4SR44. The mirror and cloth curtains are mechanically-driven, the timing of the shutter being electrically governed by transistors and a magnet. The combination of resistors routed by the speed setting determine the length of time the magnet remains engaged. The large cloth curtains as well as the size of the exposure area limits the maximum flash synchronizing speed to 1/30 sec.The shutter does not fire without film being loaded. However, one can test the shutter by rotating the counter dial away from the empty position while the film door is open and then by closing the film door while still holding the dial, thus facilitating the unlocking of the advance mechanism and operation of the shutter. It was also possible to check the shutter with a bypass key that was inserted in the frame counter engagement slot and allow for inspection of the shutter while the film door was open. The frame counter is incremented only while there is film passing over the « main roller » or « counter roller » next to the take-up spool in the camera. The camera disengages the « transport system » when the counter dial (connected to the frame counting control cam) has reached the last frame, or when the counter has returned to the « empty » or start position. The automatic frame counter resets only if the shutter is released before opening the back. Electromagnetic operation of the shutter means a battery is required to power the timing as well as the holding of the curtain release mechanism when the release button is pressed. When there is a loss of adequate voltage, the camera cannot complete the operation cycle. In this state, the mechanically actuated mirror is allowed to rise, however, the curtain release mechanism would continue past the cycle and not fully disengage the curtains from the primed position. Therefore, the reset procedure will be necessary to bring the mirror back to finish the cycle. A small button located flush on the right-hand camera front, just below the shutter-release button, is provided for restarting of the mirror/shutter cycle and depressing the shutter release once more will release the cycle. In a situation where the shutter fails to fully operate, the frame is lost. The shutter release button is standard threaded for pneumatic bulb/cable releases, an accessory timer or the use of a larger accessory (‘soft touch’) button. The fingernail-operated latch to the left lower side releases the film door for loading. The film spools are secured by the pins and slot shaped opening at either end of the film spool. The camera has two twist-lock cams that turn and pull out to open, the left side for the unexposed roll and the right side, known as the « take-up » spool. The differences of the 120 and 220 start length of paper have indicated starting points which are marked above the film plane for lining-up the START mark on the film. The film advance system is a tension/friction type, the film source side being a tension brake and the take-up side torque/slip clutch. A counting cam governs the frame count and interacts with the friction system to allow enough slip and movement to accurately space each frame from the beginning of the roll to the end. The counting cam also allows the system to regulate a lock to open and close, allowing the shutter to fire. This slip system has brought criticism of durability, as it would slip more over time, causing frame spacing issues as well as disengaging the shutter. The frame counter system, tied to the counter roller, operates the automatic reset of the counter (i.e. returns it to start) whenever the back is opened, and also sets the regulating of the next frame.

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