me 109 engine swaps

[Aozora]

Here are the connections for a Packard V-1650 in a P-51D:

And some instructions - note: colour coding was used:
Fuel Lines = Red bands
Oil Lines = Yellow bands
Coolant = White-black-white bands
Hydraulic = Light blue-yellow-light blue band
Vacuum = White-light green bands

in addition "all units of separation at firewall disconnect points are marked with a 1/4 in band of orange lacquer"

 

[Airframes]

Motor cannon was unbolted and the muzzle flange detached from the sleeve for the prop, and then withdrawn from the rear of the engine block. The breech mechanism was on the weapon, but the receiver housing on the airframe, inside the cockpit.

 

[nuuumannn]

Cool pics Terry, lots of great info in them alone. In the third photo it looks like they've gone to the trouble to take everything off, exhaust ports, annular fluid tanks around the front of the engine and oil cooler, whereas in the second photo the engine's come off and gone on complete. That'll take time to do as well, removing ancilliary equipment from the old engine and refitting to the new, although the new powerplant (engine assy) could come with all that gubbins attached, making work quicker.

In the second photo it looks like the aircraft has a serious oil leak from the cooler going on the fluid on the lower cowl; there's a guy down there probably disconnecting fluid lines. They seem to be in a warmer environment than the other pictures. In the third photo there are a lot of rubberneckers, blokes standing round throwing out sarcastic comments, no doubt, while a precious few do the work! It actually looks like a training session with (perhaps) young apprentices watching the process. The guy with the lapel flashes above the guns is possibly the lead hand directing the show. Note also the muddy conditions on the ground.

In the first photo they've taken the entire front casing off. The guy at the front's wearing an Iron Cross. In the fourth from top they've covered the firewall over, which means it could be raining or there's gonna be a bit of a wait before the new engine is fitted.

In modern turbine aircraft adjoining fuel lines are held together with Wiggins couplings, which are a pain in the rear end to disconnect sometimes; they can take ages to remove and result in a lot of explicit language emanating from around fuel tanks!

 

[Airframes]

Thanks Grant. The chap with the 'iron Cross', in flying kit, is in fact Major Brandle, RK, apparently inspecting damage to the engine of his '109G. (nb - I can't find an umlaut on the forum 'system' to place over the 'a' in Brandle !).
Just out of interest, the quickest I've ever taken an engine out of a car, was around 15 to 20 minutes. This was back in the 1970's, when I used to rally an old Sunbeam California (the 'fast back' version of the Hillman Imp, rear-engined.).
Actually removing and re-fitting the engine was easy and quick, as it was held by four bolts, and two in the rear body cross member, which acted as a rear engine bearer, and the engine could be supported on a 'trolley jack', unbolted and moved back, out of the engine bay.
Unfastening all the connections was relatively quick also, and from start to finish, when removing the engine, only took around one to one and a half hours. Once bolted back in place though, re-connecting everything was a b*st*rd, taking twice as long, which meant the whole process, from start, to removal, to replacement and engine running again was around 4 to 5 hours at best - and that's on a small 'lump', at ground level, in a warm, dry, garage !!

 

[FLYBOYJ]

In modern turbine aircraft adjoining fuel lines are held together with Wiggins couplings, which are a pain in the rear end to disconnect sometimes; they can take ages to remove and result in a lot of explicit language emanating from around fuel tanks!

 

[razor1uk]

Of those pics naturally, they show different versions of 109 (mostly from memory, are E's and G's with an F, largely Ostfront based) in different theatres being taken off or being readied to put on the airframe, hence why some have more or less upon them - also depends on the enemies local area activities too.
Some of the removed parts are stripped down for salvaging for new/as-new-replacement engine usage, or for the squadron spares depot, others locations are likely at more rearward area battlefield maintainance airfields, others are closer-to/at-the front operations airfields.

Those same 109 pics are also in Uwe Fest's book 'The Fighting Me.109', and as used in the dual book with Chaz Bowyer (spelling) of 'Hurricane () Messerschmitt'.
The actual removal as suggested, from start to finish would take a good portion of daylight hours, excluding the ground test the following evaluation test flight by the techical officer or his subordinate before the aircraft was declared fit for service.

Although I believe the actual task of swopping out an already partially drained and totally disconnected engine, for a checked, adjusted, checked again, built up and then another checked engine is about right at 30mins (unless its propaganda); naturally local combat, weather (and late war, adequate supplies/tooling) situations permitting.